The client is windows 2000 sp3. vanilla smbd 3.0.22 running on CentOS 4.2 After working for a while the server (smbd) closes the tcp connection and printing to the logs "BAD SIG" errors. I'll attach shortly a level 10 log file and tcpdump output file.
The log file is here: http://www.disksites.com/samba-logs/netania2k4.log.gz The tcpdump file is here: http://www.disksites.com/samba-logs/netania2k4.dump.gz (can't attach - too big).