I just used gparted to resize a reiserfs partition.  After the resize operation is complete, gparted automatically runs "reiserfsck --y --fix-fixable" on the partition.  However, as soon as the resize operation completes, some process (Gnome's automounter I presume?) mounts the newly-resized partition automatically, just before gparted starts the fsck.  Then gparted proceeds to fsck the partition even though it's mounted (because of the --y flag).  Obviously fscking a mounted partition is a bad thing, so gparted should make sure the partition is not mounted before running its auto-fsck.