Internet Explorer 7 vs CCleaner?

Generally, when I run CCleaner, a pretty good chunk of the junk it finds is "Internet Explorer -- Temporary Internet Files." Except on rare occasions, I don't even use Internet Explorer -- I use Firefox almost exclusively.

So, what's all of this stuff that continually needs cleaning from Internet Explorer??

some things Microsoft includes the ie cache:

Microsoft word

Outlook (though if you use FF I doubt you use Outlook)

Windows Media Player

there may be more post a log (right click temporary internet files, choose analyze, right click the results and save the log, then post it here)

e.g.

ANALYSIS COMPLETE - (0.118 secs)

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1.19 MB to be removed. (Approximate size)

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Details of files to be deleted (Note: No files have been deleted yet)

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Internet Explorer - Temporary Internet Files 1,222 KB 5 files

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C:\Users\XXXX\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.Word\~WRS{6D04FF31-5C0F-4587-9983-AF6907069529}.tmp 2 KB

C:\Users\XXXX\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.Word\~WRS{778C1D9E-D72D-441A-ADC5-B213A0E20815}.tmp 1 KB

C:\Users\XXXX\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.Word\~WRS{A1CFF880-A41D-4899-B51C-1AC15308D5C4}.tmp 72 KB

C:\Users\XXXX\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.Word\~WRS{FE11B3E0-965E-4C83-9159-515D7CCC1EE4}.tmp 1,116 KB

C:\Users\XXXX\AppData\Local\Microsoft\Windows\Temporary Internet Files\Low\Content.IE5\index.dat 32 KB