[Samba] Users losing connection at random

First let me start off by thanking you for your time. I have what I think is a unique problem. Daily on average there are about 67 users that connect to my server. Usually I will get a call from 1 or 2 of them in the morning saying that they cannot log onto the server. The message they keep

Help Is Here.....317867

Email:[EMAIL PROTECTED] 2-1Customer Service Number310890