[library user]

I also have been running McAffee Security suite on it the entire time.

Ditch McAfee. It's junk. Use this instead. http://download.cnet.com/Avira-AntiVir-Personal-Free-Antivirus/3000-2239_4-10322935.html

[mc5cents]

I’ve had good luck using Microsoft Security Essentials which is free too. No problems in over a year. Got rid of my pay by the month security stuff.

[Swordmaker]

"I also have been running McAffee Security suite on it the entire time."

Ditch McAfee. It's junk. Use this instead. http://download.cnet.com/Avira-AntiVir-Personal-Free-Antivirus/3000-2239_4-10322935.html

I agree. A month ago two of my clients' who insisted on using McAfee because they got a free 15 month subscription with their new Windows7 Dell desktops suddenly found their network HP printers non-operational... McAfee's latest update had decided that all of the outgoing data packets from HP software to the LAN had to be blocked by the McAfee firewall on all the new Dells. Why? Who knows. Acura or Avast are good. . . Although I really think you can probably get by with Microsoft Windows Security Essentials.