Welcome to Seven Forums alkarim77. It's always a good idea to start a new thread, but since you posted here...
Do you have a firewall? I found the latest Comodo update blocked all my browsers, they will not even open. I did a system restore from before the update (don't have time to troubleshoot what Comodo did), and all is well. Quite odd they didn't even open, like yours, rather then couldn't connect.
Try to connect from Safe mode with Networking. This tute is for 7, but it's the same. If you can connect from safe mode, something, likely a security program, is blocking them. Safe Mode
You can then try a clean start to track it down (this too is the same in XP) Troubleshoot Application Conflicts by Performing a Clean Startup