This isn't a serious problem; more of a minor puzzle really. I run Ccleaner from time to time and have frequently noticed that when I run the cleanup analysis, there are always several thousand KB of temporary internet files listed under Internet Explorer. As I never use IE I wonder where they come from. I just upgraded to Windows 8 (From Windows 7) and they still appear.
I use WinXP and rarely if ever use IE and find the main culprit for files appearing in Temporary Internet Files (TIFs)is Outlook Express. So, assuming Win7/8 follow the same logic, if you use Windows Mail you are bound to get a fair amount in TIFs. I guess if you were to disable HTML capabilities, the issue would largely (totally?) disappear, but disabling HTML in this day & age is a bit unrealistic.
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