Hi Paul,

I'll try and give you as much information as I can, if ther is more required please do ask.

The users do get these errors intermittently. Some have got used to it and close the window so that they can get on with their work so I dont hear of every occurrence.

The scenarios can be quite varied. I know one was because the wireless kept losing connection. But that was the only one. The others normally are when they are in the middle of using it. I guess the error message preceding the "M4" message is the most important. It varies and I dont have a recent one (because it hasnt been reported lately).

We are all on the one LAN and all machines are running Windows 7. The server runs linux.

I will try and get users to let me know what they were doing and what the preceding error message says.

Is there any other information I should try and capture?

Thanks.
Dil