when I plug in my USB disk, it gets automounted to /media/usbdisk.
/dev/sdb1 on /media/usbdisk type subfs (rw,nosuid,nodev,sync,fs=ext2)
However I cannot write to the usbdisk as a normal user:
pu@susev:/> touch /media/usbdisk/test
touch: cannot touch `/media/usbdisk/test': Permission denied
How can I change this so that a normal user can write to the USB stick?