Never had one.
Good advise there Atomrat.
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Download and install Ccleaner.
Don't worry, It is a very easy program to use and if you do this,
You will see what I am talking about.
Answer yes to all questions you see.
Make sure you know all your saved passwords,
Then tick all the box,s excepting for network passwords and the very last one.
After running the file cleanup, Run the registry cleaner.
answer yes to all questions you see.
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Reboot the computer and be absolutely stunned on the difference it will make.
If some thing disappears, There was something wrong with it.
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Like this,