I did an small video showing the issue:
Besides that I'm having another problems reading/writing to the Serial in the Arduino, running in the Hardware-> Troubleshooting forum :-?
Are you using a Core2 Mac? (a.k.a. is your CPU 64bit?)
Are you running Arduino as a 32bit app, or did you change the Java version to 1.5?
The RXTX library problems certainly are a pain in the ass.
I'm using the latest model of Macbook Pro... just bought it..
Arduino APP @ 32bits trough the "Get Info" thing..
Still no clues yet :-/
Hmm... should be working... I would say your Hardware->Troubleshooting issue is definitely related...
Have you tried re-installing the FTDI driver? The driver is at /System/Library/Extensions/FTDIUSBSerialDriver.kext . Deleting that file and rebooting seems to be the easiest way to remove the driver. The newest driver version is 2.2.10 and can be downloaded at http://www.ftdichip.com/Drivers/VCP.htm
I'm using the 2.2.9 version of the FTDI driver which came with Arduino with no problems, but I have an older Core1/32bit Macbook.
Once you get this straightened out, check out Arduino Playground - Cocoa . I wrote the IOKit/ioctl part, which lets you ramp up the baud-rate. You probably want the latest HardwareSerial(otherwise your Arduino can only hit 1000000 baud). Google Code Archive - Long-term storage for Google Code Project Hosting.
Yep.. I tried 2.2.9 and 2.2.10.. same issues. Tried to reinstall and, as it didn't work, even reinstalled the OSX itself. No lucky.
Now I'm using the 2.2.10 again...
:-?
Wow... I really don't have a clue... you've tried pretty much everything
The only thing I can come up with is maybe the CREAD flag on the termios structure for the serial-port is getting turned off by some misbehaving application. Most apps reuse the termios setting from the last application and only change the normal flags (databit size, parity, etc). The CREAD setting disables the serial port's reciever, so nobody changes it.
http://developer.apple.com/documentation/Darwin/Reference/ManPages/man4/termios.4.html
The project at http://www.ghearing.com/Arduino%20Serial%20Example.zip doesn't set CREAD, it just re-uses the termios setting. You can set it by changing:
cfmakeraw(&options);
to
cfmakeraw(&options);
options->c_cflag |= CREAD;
Thank you, gabebear for all your help. Unfortunately the Project you send didn't work either. :-/
I selected the right Serial port and Baud Rate. The Arduino then Resetted and got frozen. It seems I'll have to keep using Windows for now... maybe on 00017 it will work? 
Open up Terminal and run
stty -e -f /dev/tty.usbserial-WHATEVER
What is the output? do you have "cread" in you "cflags"?
the output for me is
$stty -e -f /dev/tty.usbserial-A6008cD3
speed 9600 baud; 0 rows; 0 columns;
lflags: -icanon -isig -iexten -echo -echoe -echok -echoke -echonl
-echoctl -echoprt -altwerase -noflsh -tostop -flusho -pendin
-nokerninfo -extproc
iflags: -istrip -icrnl -inlcr -igncr -ixon -ixoff -ixany -imaxbel -iutf8
-ignbrk -brkint -inpck -ignpar -parmrk
oflags: -opost -onlcr -oxtabs -onocr -onlret
cflags: cread cs8 -parenb -parodd hupcl -clocal -cstopb -crtscts -dsrflow
-dtrflow -mdmbuf
discard dsusp eof eol eol2 erase intr kill lnext
^O ^Y ^D <undef> <undef> ^? ^C ^U ^V
min quit reprint start status stop susp time werase
1 ^\ ^R ^Q ^T ^S ^Z 0 ^W
Maybe something will pop out at you. Termios is an old BSDism
stty -e -f /dev/tty.usbserial-A70076al
speed 9600 baud; 0 rows; 0 columns;
lflags: -icanon -isig -iexten -echo -echoe -echok -echoke -echonl
-echoctl -echoprt -altwerase -noflsh -tostop -flusho -pendin
-nokerninfo -extproc
iflags: -istrip -icrnl -inlcr -igncr -ixon -ixoff -ixany -imaxbel -iutf8
-ignbrk -brkint -inpck -ignpar -parmrk
oflags: -opost -onlcr -oxtabs -onocr -onlret
cflags: cread cs8 -parenb -parodd hupcl -clocal -cstopb -crtscts -dsrflow
-dtrflow -mdmbuf
discard dsusp eof eol eol2 erase intr kill lnext
^O ^Y ^D <undef> <undef> ^? ^C ^U ^V
min quit reprint start status stop susp time werase
1 ^\ ^R ^Q ^T ^S ^Z 0 ^W
Exactly the same as yours... ;D
I have exactly same problem as you. Been trying to get this to work for months.......posted a reply on your video.
Macbook Pro. Core 2.
Uploads work fine in XP.
Serial & Board correctly selected.
Arduino Duemilanove ATMEGA 328P-PU.
For selecting java version. Look "Java Preferences" in spotlight.
So it seems the latest Macbook has an issue with the FTDI driver? I'm betting this has something to do with the USB SD-card reader you both have built into your laptops.
In System-Profiler, is the FT232R directly connected to a "USB Bus" or is there a hub?
Could you try putting a powered USB hub between your laptop and Arduino? ... I know this shouldn't do anything, but it often does.
I just tried my Arduino connected via a non-powered hub and it still works fine.
Tried the USB Hub... same thing :-/
It definitely seems like driver problems to me, but I'm guessing the problem is with 10.5.7 Mac OS X and not with the Macbook itself. I might be wrong, but I think if it was the Macbook (hardware issue) it wouldn't work in the Windows trough the Virtual Machine. Am I right?
Besides that, I'm having the exact same problem (can write, can't read) with the Macbook and with an PL2303 USB/Serial cable using the open source driver. An FTDI USB/Serial cable from a friend works perfectly..
Maybe my computer is just picky ;D
Well, lots of people are using 10.5.7 without issue, so it seems like it is something with that model...
Apple will sometimes ship beta-ish OS builds with their newest hardware. What is the build version of the Leopard that came with your laptop? You can check this in System-Profiler by clicking on the "Software" subcategory(not an item in it).
Mine is 9J61, which was displayed as "Mac OS X 10.5.7 (9J61)". It looks like the Macbook Pros made after June use build 9J3050. If both of you have this build, then I'd say it's a kext(kernel extension) problem and FTDI and Apple would like to know about it.
I'm running Mac OS X 10.5.7 (9J61) too.
Is your chip a 328P-PU too?
yep, ATMEGA328P-20PU...
Here's some more info from my setup.
System:
OS X 10.5.6
IDE Version 0016
USB driver FTDIUSBSerialDriver_v2_2_10.dmg
ATMEGA328P-PU
IDE settings are correct
Tools > Board > Arduino Duemilanove w/Atmega 328
Tools > Serial > /dev/tty.usbserial-A70076ay (tried cu.usbserial as well)
Arduino board - purchased from ebay.
Upload works fine using XP via bootcamp.
Here's the console output:
avrdude: Version 5.4-arduino, compiled on Oct 9 2007 at 11:20:31
url line removed
System wide configuration file is "hardware/tools/avr/etc/avrdude.conf"
User configuration file is "/Users/MYUSERNAME/.avrduderc"
User configuration file does not exist or is not a regular file, skipping
Using Port : /dev/tty.usbserial-A70076ay
Using Programmer : stk500v1
Overriding Baud Rate : 57600
avrdude: Send: 0 [30] [20]
avrdude: Send: 0 [30] [20]
avrdude: Send: 0 [30] [20]
avrdude: ser_recv(): programmer is not responding
avrdude: stk500_recv(): programmer is not responding
avrdude: Send: Q [51] [20]
avrdude: ser_recv(): programmer is not responding
avrdude: stk500_recv(): programmer is not responding
RS light blinks 3 times. I reckon thats the avrdude: Send: 0 [30] [20] bit.
System Version: Mac OS X 10.5.7 (9J61)
Kernel Version: Darwin 9.7.0
and my Arduino is an ATMEGA328P-PU :-?
Arduino board - purchased from ebay.
Hmm... mine came from eBay too. Some place from China. Could that be a clue?? :-/
System Version: Mac OS X 10.5.7 (9J3050)
Kernel Version: Darwin 9.7.1
How can I tell more specifically which board I have besides a Arduino Duemilanove AtMega328?
Also, I'm a step behind you guys, I can't even get a valid port name in the tools -> serial port menu to appear. I've tested Arduino-0016, FTDI driver(s) 2.2.9 and 2.2.10 on a 15" macbook pro, 13" macbook pro, 13" macbook, and a Mac Pro. None of them can even see the driver to select.
Furthermore, I can get it working fine using VMware (both XP and Kubuntu) on any of these platforms.
-Eric
WOW, something is really broken...
I have a new Mac mini (Core2 2Ghz, Nvidia9400M) with 10.5.7, fully updated. I use it as a media frontend for my TV. I just installed Arduino 16 and the FTDI 2.2.9 driver that comes with it. Everything worked perfectly, I uploaded a sketch and communicated with my Duemilanove.
I'm wondering if the FTDI chip on your Duemilanove is different(maybe a cheap Chinese clone). Open System Profiler, go to the USB section, and find the FTDI chip.
I have two Duemilanoves, and they show:
FT232R USB UART:
Product ID: 0x6001
Vendor ID: 0x0403 (Future Technology Devices International Limited)
Version: 6.00
Serial Number: A6008cD3
Speed: Up to 12 Mb/sec
Manufacturer: FTDI
Location ID: 0x3d100000
Current Available (mA): 500
Current Required (mA): 90
and
FT232R USB UART:
Product ID: 0x6001
Vendor ID: 0x0403 (Future Technology Devices International Limited)
Version: 6.00
Serial Number: A6008cD3
Speed: Up to 12 Mb/sec
Manufacturer: FTDI
Location ID: 0x1d100000
Current Available (mA): 500
Current Required (mA): 90