ORA-29400: data cartridge error

hi,

we are running oracle 10 on suse linux. when i try to rebuild the
tables i see this message:
"ORA-29400: data cartridge error
ORA-01688: unable to extend table..."

i already was checking the space on the disk, i still have enough
space for the rebuild. you guys have any idea what this error message
could mean?


thanks in advance, marton