All I have done was to dump files in caches and preferences as recommended. I also trashed Firefox out of utilities and downloaded a fresh version. All my bookmarks had turned up though? Still the redirect problem.
Before restarting, I noticed mail behaving weirdly. That was the reason for the restart. Prior to that there was no change to anything I can think of.
The first thing that came to mind was the users account. Its under my name so no relief from that!.
However I have come across my mail files

The thing is the new mail program does not want to import them. I go to file, import mailboxes, mail for mac osx, and chose my original pop mail files which are emlx files. All that happens is that no mac osx files found.

Anything else I can do?
How do I do a virus/system check on a mac?
Thanks for your help again.