ok i started the builder and it's currently doing the stress test. i did get the following error, is it normal?

set_blocksize: b_count 1, dev ide0(3,4), block 1!
EXT2-fs error (device ide0(3,4)): ext2_check_descriptors: Block bitmap for group
64 not in group (block 3)!
EXT2-fs: group descriptors corrupted !
mount: wrong fs type, bad option, bad superblock on /dev/hda4,
or too many mounted file systems
hdstress.cpp 189 ( 19): Poll result=0 on fd=5
hdstress.cpp 189 ( 19): Poll result=0 on fd=5