I got an odd error message at the login screen for XP. It said there was an IP conflict with another machine. After resetting my router and PC I dont get the message anymore, but I am still getting an error message from my FireFox browser--a "Domain Name Mismatch--that says

"You have attempted to estbalish a connection with 'www.c4sms.com'. However, the security certificate presented belongs to 'api.c4sms.com'. It is possible, though unlikely, that someone may be trying to intercept your communication with this website." I can either view the certificate, click ok, or cancel, or help.

Welcome to PC Help Forum.

Is 'www.c4sms.com' a site that you use?

no its not, I've never heard of it. I think it's a german website actually.

Ahhh..then in that case, please follow the instructions HERE and post the resulting logs back into this thread as attachments.

Doesn't look like anything malicious , it is a site used to send sms text messages to mobile phones from pc's.

But he is saying that he doesn't visit that site...

Thats true.

But i have also checked that site out for anything malware ect. related and i couldn't find anything wrong with it.

Maybe some else (a friend/family) has signed up/used that service on youre pc?