Sounds like you need to clean your temporary internet files. The behavior you are describing is what happens when your temporary internet folder is full. Go to Tools
and on the drop down menu select Internet Options
. On the General
Tab in the Temporary Internet files section click the Delete files
button then place a check mark in the Delete all offline content
box and click the OK
button. You may also want to clean out any old cookies while you are cleaning the rest of your cache.
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