unknown user/invalid password

[EC - Bridget Lung]

Hi,

I have this problem recently. Some of my SAMBA users are having problem 
connecting to all SAMBA(UNIX authenticating machine) servers. They were able 
to connect to previously and suddenly they are not able to do so. Somehow the 
userid and password are all correct. Any idea what is going wrong? Should I 
reboot my servers?

There is another concern that I have. There is some entries "dfree seems to be 
broken on your system" in my sambadirectory/var/log.smb. Does anyone have this 
problem before?

Please advise and thank you.

regards,
Bridget