[Samba] DOS samba problem

[sacilist at softhome.net]

I have a dell poweredge samba server3.0.2a with mandrake10. which is serving 
some files of clipper program running in reiserfs. i have 20 clients which 
are win98. 

Everything works fine, but sometime of the day, the system just freeze, and 
nobody can start the clipper application until i restart the samba service. 
i dont know what's happening, maybe a different configuration between this 
version and the last one (i was using samba 2.x in conectiva6.0, wich 
clipper was in FAT filesystem).