After installation of SP3, I cannot access any Microsoft site requiring a logon, and cannot access any email accounts (ie. Hotmail, Gmail, Yahoo Mail, Hughesnet Mail. Some sites will load without problem, but most tell me "Internet Explorer Cannot Load this Page (or site).
Also, my video driver does not work properly (ie. Dual Monitor, Secondary Monitor).
Reverted back to before SP3 installation, and all is fine.