strange fsck results

[reese at adeptscience.com]

I am running FreeBSD 6.3 as a VMware virtual server and am getting some 
strange results when I run fsck.  When I run it in multi-user mode I get 
quite a few UNREF FILE errors but when I switch to single user mode 
fsck does not find any errors.  Is this something I need to worry about 
and if it is how might I try to get fsck to repair them?


TIA
Charlie Reese