fsck exits with error status, even though no errors are found

[JD]

kernel-2.6.35.14-96.fc14.i686

During boot, when the time comes for fsck'ing
the file systems, whatever script is doing that,
is exiting with an error status, even though no
errors are displayed, and I am prompted to either
enter the root password, or type Contrl-D to continue.
Cntrl-D simply reboots. Entering the root password,
and running fsck manually to check all filesystems in fstab,
yields that all is well, no errors are found, and the exit
status is 0.

Would appreciate some info on identifying the script that
does the fsck during boot.

Thanx.