SD card full bricks Android 2.2: In fsckdelay end. Kill dosfsck, ret=-1
Here is how I solved both problems:

1) Remove battery and reboot. Two times because it was still behaving strange the first time.

2) Remove files little by little, until I found the problematic file, called %01.%02, I recognized its content as a tile from the Maverick map app (which I have not launched so it is more of a random casualty). Anyway, I renamed that file to a.a. and then deletion was successful.