I see you've posted a new thread but haven't bothered answering me here. Assuming you are using a supported operating system. Enable Windows Firewall then do the following:
How to Uninstall Personal Firewall 6 and 7: http://service.mcafee.com/faqdocument.aspx?id=TS100058&lang=en_US&prior_tid=2&AnswerID=16777216&turl...
This may be the cause of your problems so scroll down to the manual removal method.
Do that first, reboot if asked and then do the following:
1. Uninstall all McAfee programs through "Add or Remove Programs" in Windows "Control Panel".
2. Use the MCPR tool, see this article: How to remove supported McAfee consumer products using the McAfee Consumer Products Removal tool (MC...
This will remove all McAfee remnants from your computer. (you must have Windows Vista, XP or 2000 SP4 to use this tool)
3. Launch Windows Explorer and delete all McAfee files in "Program Files" but especially in "C:\Document and Settings\<user>\Application Data" and "C:\Document and Settings\All Users\Application Data". You have to set Windows Explorer to show all hidden files and folders (Tools > Folder Options > View tab). Just delete the McAfee folders even if they are empty in all the "Application Data" folders. Can be more than one!
In Vista: C:\Program Files, C:\ProgramData and C:\Users\yourname\AppData\Roaming
4. Reboot and redownload/reinstall your McAfee products directly from your account at the McAfee web site. (NOT from any CD that you may have).
For future reference, never upgrade such an old application, especially one that jumps several versions - this applies to anything basically. Better to uninstall the old first and then install the new.