synchronization of XP with NT domain

Hi

I have configured offline file on my XP latop. The
problem is that some files (and there is no pattern with
regard to the type of file or location from where they
were synchr.)although they appear in the offline directory
are not avaliable when disconnected from the network. The
error says it cannot find the file. I have verified that
the file is physically on C:.

Any ideas would be appreciated.

Thanks in advance.

brendan