BOAC,
Now your asking. Any question on a/c systems or gliding....fine...with PC's it's a different matter...please bear with me
She first deleted the two large files...about 3.5 and 3.6 respectively...both from known sources so no suspicion on my part there although the sender of one of them has caused problems before.....then she went to OE and the tools/ accounts .....and deleted a whole load of accounts which she said shouldn't be there....only my personal email account was left. Now where these came from I have no idea as I don't ever get involved with stuff like this and I am also careful which sites I visit...how they got there I have no idea as there is only me who has access to my PC......then did a test and a mail appeared. She suggested that OE might be corrupt in some way....hence I went searching for a tool......an interesting point however....when I went to the BT / Yahoo! homepage....it wouldn't display....then I got a series of messages from spybot asking if I wanted to accept or deny the changes in start-up directories ( just had another in fact asking about Flash ) ....so I pressed the accept button and lo and behold, up came BT's page.
I did a speed test as well...c/o sites on Google and the variations went from 1.3 to 2.5.....so I am suspicious of the results.....interestingly enough....all the smilie icons on this site have suddenly reappeared as well....some had a "x" at times.....
I can't, in all honesty, answer the last part of your question as I simply don't know, but I hope the information I have supplied will be understood by you, and others.
The next issue I face is posting a pic here on the Mil site in the caption comp...I have looked at your guide so it should be an interesting excercise......or not!.