My XP machines are losing DOMAIN access, symptoms can include:

Username no longer Joe Smith but jsmith on start menu
Access Denied on printers
Limited access on Network
No network connectivity
no access to file shares
disconnected mapped drives

I will run netsh winsock reset and reboot. It fixes the issue.

This is not happening on my Win7 computers.
I have Server2008 MDC and win2003 DC's at several offices.

Trying to figure out to fix this on the system/networkDoes this just happen once to each machine, or is it a recurring issue after you've run netsh winsock reset and rebooted?
Does there seem to be any pattern at all as to which machines encounter the problem?  For example is it certain departments, PEOPLE connected to certain printers, people who run certain programs, etc?It really has no preference besides XP machines. Have not seen it once my Win7's have about 100 of each. It generally is fixed after the reset. I have run into 1 pc that I have had to do it several times on.

We were having a problem with domain trust issues on all PC's. So I FOUND an article with a solution that I ran. It has fixed that issue. This new issue started about 3 days later. Not sure if that could be RELATED or not. here is the link on that:
http://dailyadminlife.wordpress.com/2011/08/05/the-trust-relationship-between-this-workstation-and-the-primary-domain-failed/I can't see that that change would cause this issue myself, so I don't think it will be related.
I'll have a think on it, it's not something I've run into on our domain but we're very much phasing out any XP machines we have left.  I'll post back if I think of anything to try.See Here...I am having no problem fixing the winsock issue. My goal now is trying to figure out what is causing it. So far I have repaired about 30 XP machines with no light at the end of the tunnel for the other 70. I am trying to figure this out before I have to.