Make sure you reboot after uninstall. I have had problems without the reboot.

>>>>
>>>>I use free Comodi firewall http://personalfirewall.comodo.com/ and like it.
>>>>There's no reason to pay for McAfee or Norton AV because there're much better free products (for personal use):
>>>>

http://free.grisoft.com/doc/1
>>>>

http://www.avast.com/eng/avast_4_home.html
>>>>I used both of them and they work fine.
>>>
>>>Thank you, Sergey. I will start with the Comodi firewall. And then will go with .avast. I hope I will be able to uninstall McAfee after installing the other products. Sometimes these AV software don't want to give up.
>>>
>>
>>You should uninstall any AV before installing new one or you're asking for trouble.
>
>Yes, makes sense. Thank you.