-Windows Defrag Utility has disappeared
-Mozilla Firefox will not let me bookmark any locations
-Microsoft Outlook identifies a lack of memory resources and asks that some programs be stopped before proceeding.
-Most downloads have to be restarted half way through
Just wondering if I may have been infiltrated by worm, spyware, or virus that has latched on to memory and corrputed things.
Point 2, I Unistalled earlier of Firefox, and downloaded and re-installed latest version after having deleted all bookmarks for earlier version, but new program will not let me bookmark and webpages either.
Point3, I can't do anything with Microsoft Outlook so will have to continue using Outlook Express which I don't care for.
Miscellaneous; i keep getting "Your Computer has recovered from a serious error" messages weekly.
Please advise what should be next course of action in this case.