Arduino Mega 2560 - Mac OS X 10.8 Serial Port

Using Arduino IDE 1.x
1

Hi everyone,

I just received my very first Arduino, it's an Arduino Mega 2560...
First, here is my System profile:
MacBook Pro (Early 2011)
OS: Mac OS X 10.8.3
FDTI-Driver: Newest, just installed :wink:
USB 2.0 Ports... everything working...
Newest Arduino IDE

Having looked into the Mac OS X Startup guide (http://arduino.cc/en/Guide/MacOSX), i knew there shouldn't be no drivers required with Arduino 2560... But the Arduino didn't show up... (Serial Port)
I looked around in the Google search and found the FDTI Drivers - alright - installed!
Starting the IDE.... Nothing. Reboot with connected Arduino -> IDE started -> Serial Port appeared (tty.serialmodemXXX).
Wrote sketch, want to upload it: Port already in use :frowning:
Now: disconnected the Arduino, reconnected ... no serial port...
Reboot, restart the IDE, reinstall the driver, deinstall the driver, use other USB Ports ... Nothing.
When I connect the Arduino to my Mac, in the Console these notifications appear:

02.12.13 17:21:22,000 kernel[0]: USBF:	753.570	[0xffffff801b2fe800] The IOUSBFamily is having trouble enumerating a USB device that has been plugged in.  It will keep retrying.  (Port 2 of Hub at 0xfd120000)
02.12.13 17:21:25,000 kernel[0]: USBF:	756.569	[0xffffff801b2fe800] The IOUSBFamily was not able to enumerate a device.
02.12.13 17:21:26,000 kernel[0]: USBF:	757.410	[0xffffff801b2fe800] The IOUSBFamily is having trouble enumerating a USB device that has been plugged in.  It will keep retrying.  (Port 2 of Hub at 0xfd120000)
02.12.13 17:21:30,000 kernel[0]: USBF:	760.812	[0xffffff801b2fe800] The IOUSBFamily was not able to enumerate a device.
02.12.13 17:21:30,000 kernel[0]: USBF:	761.669	[0xffffff801b2fe800] The IOUSBFamily is having trouble enumerating a USB device that has been plugged in.  It will keep retrying.  (Port 2 of Hub at 0xfd120000)
02.12.13 17:21:31,000 kernel[0]: USBF:	762.498	[0xffffff801b2fe800] The IOUSBFamily gave up enumerating a USB device after 10 retries.  (Port 2 of Hub at 0xfd120000)
02.12.13 17:21:31,000 kernel[0]: USBF:	762.498	[0xffffff801b2fe800] The IOUSBFamily was not able to enumerate a device.

I already looked around here in the forum, but nothing helped me...
Not sure what to try next. It seems that the Mega is working just fine!