ThrottleAssertion small suggestion

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In the code of ThrottleAssertion I noticed that it uses DateTime.Now instead of 
DateTime.UtcNow. This might cause some problems with Daylight saving time when 
the clock goes forward or backward.

Simple solution is to change the two DateTime.Now statements to DateTime.UtcNow.

Original issue reported on code.google.com by y...@yvo.net on 14 May 2012 at 4:57

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Original comment by azizatif on 14 May 2012 at 9:56