I am currently having the problem of when I Alt-Tab or go into the task view, the thumbnail for each program looks as if it corrupt. Has anybody seen this before and has a solution? This is the only problem that I have that I can see, but it is still mildly annoying and worrying. Here is a screenshot:

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Nick P
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What exactly is wrong in the screenshot? – Ramhound Oct 15 '15 at 16:52
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@Ramhound took me a couple looks to spot it as well. The program Icons in the title headers are whacky. – Ƭᴇcʜιᴇ007 Oct 15 '15 at 16:53
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@NickP What have you attempted to repair it already? Rebooted yet? Have you tried [clearing the icon cache](http://superuser.com/questions/499078/refresh-icon-cache-without-rebooting)? – Ƭᴇcʜιᴇ007 Oct 15 '15 at 16:54
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I haven't tried rebooting yet, as I need to do other work, and it is only a minor inconvenience. Tried clearing the icon cache, but nothing has changed. – Nick P Oct 15 '15 at 16:58
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@Ƭᴇcʜιᴇ007 after a reboot I still have the same problem. Don't see anything else wrong with the system though. – Nick P Oct 16 '15 at 16:50