|scavanger007, my guess (and it's just a guess) is memory. Most machines are manufactured pretty borderline to keep costs down. As memory is consumed by one thing or another, things get buffered. During buffering, things come to a standstill as the machine 'catches up'.|
Now, what to do about it. The simplest solution is add more memory. Visit Crucial.com and they can tell you which type and how much.
Something else you might try (maybe it'll work?) is to delete 'index.dat". A common ailment is a file called 'index.dat'. It gets read every time and can take quite a while if it’s too bloated. It's like a log file and keeps a record of every site you visit on the web. Empty, it's 32K, but it can grow HUGE. It's a protected file and can't be deleted by normal methods. CCleaner (free @: http://www.ccleaner.com/) can get rid of it when it’s ticked (not to worry, it gets rebuilt EMPTY on the next boot.). May not be your deal at all, but won’t cause any harm to try. I run it often.
Ed in Texas.