My problem is that contrary to this FAQ entry:

"EXT2-fs warning: maximal mount count reached, running e2fsck is recommended"

This means that on the next synch, your player will need to do its long "checking disk integrity" thing. It's nothing to worry about and you can safely ignore it. It will go away after the next synch.

My player does the Check during EVERY sync. It doesn't go away after the next sync as explained in the FAQ.

I will go home tonight and do a full manual sync as described in the FAQ and in Paul's post and see if that fixes it. Otherwise I guess I'll use Hijack to disable it.