I just installed Gentoo 1.4_rc2 from the stage 3 tarball on ibiblio.org and there is a problem. I am using ext2 for /boot and reiserfs for everything else. When the system boot, fsck attempts to do a check and it fails on the reiserfs partitions. It claims it can't find fsck.reisefs. Notice the missing "r" in fsck.reiseRfs. A quick hack is to ln -s /sbin/fsck.reiserfs /sbin/fsck.reisefs and all works well. A quick search/replace on the source should fix what looks to be a typo. I listed this as "major" because it scrolls by real quick and unless you're watching close at boot, you'll never see it.
I just grepped the sources for e2fsprogs-1.32 and there is no such mention of reisefsck... what version do you have?
actually i'd bet money that the error is a typo in your /etc/fstab script, this comes up from time to time ...
let me knwo if spanky was wrong.