Bricked Arduino Pro Mini?

I have an Arduino Pro Mini with ATmega328P.

When uploading code avrdude tells me:

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

I'm using Arduino 1.0 and I'm sure the Board / Programmer settings are correct, because I have 2 other identical Pro Mini boards those uploads without any problem (with the same FTDI USB Serial).

The LED on pin13 blinks like crazy (like ~10hz) when the power's on, I assumed the bootloader is dead and tried to burn the bootloader with an ArduinoISP (with an Mega2560 as well as another Pro Mini), without success.
I selected "Arduino Pro or Pro Mini (5V / 16Mhz) w/ ATmega328" as "Board" and "Arduino as ISP" as "Programmer", then "Burn Bootloader" from the tools menu, but it then tells me "Error while burning bootloader".
the heartbeat LED on ArduinoISP fades on and off, but the other 2 LEDs only blink twice in sequence when i plug-in the USB, then go off.

The connections between the ArduinoISP and the bricked Pro Mini (both with a 10uF capacitor between RESET and GND on the bricked board):

Mega pin53 (SS) -> RESET
Mega pin50 (MISO) -> pin11 (MOSI)
Mega pin51 (MOSI) -> pin12 (MISO)
Mega pin52 (SCLK) -> pin13 (SCLK)

Pro Mini pin10 (SS) -> RESET
Pro Mini pin12 (MISO) -> pin11 (MOSI)
Pro Mini pin11 (MOSI) -> pin12 (MISO)
Pro Mini pin13 (SCLK) -> pin13 (SCLK)

of course I had Vcc and GND connected too.

I'm now having no idea about what's going on or what I should do next.
Could somebody give me a hint, please?
or is there a "LED blink code" (like bios beep code) list somewhere?

tkx in advance!