Hello. Today my computer started acting up again. I was reading email and checking out news headlines when all of a sudden the pages stop loading. What happened is that I opened a new tab in Firefox, entered a link, and clicked enter. I waited about 30 seconds for it to load before clicking the Stop button. Then I clicked Reload. It wouldn't reload. I closed the browser and tried opening a new one. I got a message that said "Firefox.exe is already running. First close that program and then you can open a new window," or something like that. So, I went to Task Manager in the Control Panel and tried to end the firefox.exe process. The process wouldn't end. I even tried to end the process under administrative permission. It wouldn't end, though. I'd click End Process but then look at the Task Manager and firefox.exe was still running. I tried to end the firefox.exe process several times before deciding to reboot. It took about 5 minutes to shut down and reboot. I then opened my CCleaner and ran it. I rebooted and opened Firefox again and tried to click through several pages. Nothing. It just sat there unable to load. So, I closed the browser and tried to open another again. I got the same message as before- "Firefox.exe is already running...." So, I tried to end the process, was unsuccessful, and had to reboot again. The reboot took about 3 minutes this time. Then I opened the PC Tools Registry Mechanic and ran it. It didn't help either. The pages still wouldn't load. I rebooted and then came here for help. Any help you can give in this matter would be appreciated. Thank you.