download and install ccleaner
CCleaner
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google ccleaner and install it from the result filehippo. While it installs just untick the boxes as some programs you dont want.
run the cleaner in windows/applications but dont tick the bottom 11 boxes in the Windows Tab.
run the registry cleaner as well, when it asks to back up the registry , allow it to do it, then clean the registry. You should run the registry cleaner a couple of times, but you only need to save it the once.
also
Delete history and memory from your search bar
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These memory drops that occurr around your computer is caused by the internet browser.
Click this link and follow the instructions.
http://www.google.com/support/bin/answer.py?answer=465
there are 2 instructions to alter
for IE, MSN, Firefox and Safari
click the Red 1, 2 , 3 circles in the link.
Note there are instructions to clear them once only, but if you expand the info in there, it tells you how to alter the browser settings to never have them.
For History set the Days to 0.
