Mail consuming excessive processor power

In the last day or two, Mail is consuming between 60-85% of CPU power according to activity monitor, causing the processor to run hot and the fan to cycle up to high. Mail has crashed a couple of times, too. I recently moved a lot of old messages to archives and synchronized all accounts.
I am currently running two accounts on Mail, iCloud and my work Exchange account. My system admin at work reports no problems with the Exchange server.
Any help is appreciated!

Has this issue been resolved? I'm having the same error and problem and would be interested to learn more.
Linc Davis... if it helps, here are the lines from Console before, during, and after deleting the cache.db file in com.apple.mail folder. Mail is now working well at CPU% < 1% at idle and jumping up to 38% to fetch a new mail message. This CPU% problem happens often. Is there a way to resolve the issue or will this process of closing Mail and deleting the cache.db file have to be repeated regularly?
Thanks,
parasbuy22
8/13/13 11:14:57.655 AM Mail[158]: Error in CGSAddTrackingRect (1000)
8/13/13 11:14:57.655 AM Mail[158]: CGSSetTrackingAreaOption returned CG error 1001
8/13/13 11:16:40.196 AM Mail[158]: CGSAddTrackingRect: Region creation failure
8/13/13 11:16:40.196 AM Mail[158]: Error in CGSAddTrackingRect (1000)
8/13/13 11:16:40.197 AM Mail[158]: CGSSetTrackingAreaOption returned CG error 1001
8/13/13 11:23:11.575 AM Mail[158]: Unable to simultaneously satisfy constraints:
    "<NSAutoresizingMaskLayoutConstraint:0x7ff1e3d9d780 h=-&- v=-&- V:|-(0)-[WebClipView:0x7ff1e1d65700]   (Names: '|':WebDynamicScrollBarsView:0x7ff1e1d41080 )>",
    "<NSAutoresizingMaskLayoutConstraint:0x7ff1e1dd3820 h=-&- v=-&- V:|-(0)-[WebDynamicScrollBarsView:0x7ff1e1d41080]   (Names: '|':WebFrameView:0x7ff1e1db9520 )>",
    "<NSAutoresizingMaskLayoutConstraint:0x7ff1e3d4cc80 h=-&- v=-&- V:|-(20)-[WebFrameView:0x7ff1e1db9520]   (Names: '|':MessageWebView:0x7ff1e1d5fe20 )>",
    "<NSAutoresizingMaskLayoutConstraint:0x7ff1e376eef0 h=-&- v=-&- V:[WebFrameView:0x7ff1e1db9520]-(0)-|   (Names: '|':MessageWebView:0x7ff1e1d5fe20 )>",
    "<NSAutoresizingMaskLayoutConstraint:0x7ff1e39f4ae0 h=-&- v=-&- V:[WebDynamicScrollBarsView:0x7ff1e1d41080]-(0)-|   (Names: '|':WebFrameView:0x7ff1e1db9520 )>",
    "<NSAutoresizingMaskLayoutConstraint:0x7ff1dbad0c30 h=-&- v=-&- V:[WebClipView:0x7ff1e1d65700]-(0)-|   (Names: '|':WebDynamicScrollBarsView:0x7ff1e1d41080 )>",
    "<NSAutoresizingMaskLayoutConstraint:0x7ff1e3d8b700 h=-&- v=-&- V:[MessageWebView:0x7ff1e1d5fe20]-(0)-|   (Names: '|':_MailNSClipView:0x7ff1e9b2e740 )>",
    "<NSAutoresizingMaskLayoutConstraint:0x7ff1e3dd7fb0 h=-&- v=-&- V:|-(20)-[MessageWebView:0x7ff1e1d5fe20]   (Names: '|':_MailNSClipView:0x7ff1e9b2e740 )>",
    "<NSAutoresizingMaskLayoutConstraint:0x7ff1e1d09d10 h=-&- v=-&- V:|-(0)-[_MailNSClipView:0x7ff1e9b2e740]   (Names: '|':MessageBodyScrollView:0x7ff1e9b38520 )>",
    "<NSAutoresizingMaskLayoutConstraint:0x7ff1e49b23a0 h=--& v=--& V:[MessageBodyScrollView:0x7ff1e9b38520(20)]>",
    "<NSAutoresizingMaskLayoutConstraint:0x7ff1e1d06180 h=-&- v=-&- V:[_MailNSClipView:0x7ff1e9b2e740]-(0)-|   (Names: '|':MessageBodyScrollView:0x7ff1e9b38520 )>"
Will attempt to recover by breaking constraint
<NSAutoresizingMaskLayoutConstraint:0x7ff1dbad0c30 h=-&- v=-&- V:[WebClipView:0x7ff1e1d65700]-(0)-|   (Names: '|':WebDynamicScrollBarsView:0x7ff1e1d41080 )>
Set the NSUserDefault NSConstraintBasedLayoutVisualizeMutuallyExclusiveConstraints to YES to have -[NSWindow visualizeConstraints:] automatically called when this happens. And/or, break on objc_exception_throw to catch this in the debugger.
8/13/13 11:23:11.576 AM Mail[158]: Unable to simultaneously satisfy constraints:
    "<NSAutoresizingMaskLayoutConstraint:0x7ff1e1dd3820 h=-&- v=-&- V:|-(0)-[WebDynamicScrollBarsView:0x7ff1e1d41080]   (Names: '|':WebFrameView:0x7ff1e1db9520 )>",
    "<NSAutoresizingMaskLayoutConstraint:0x7ff1e3d4cc80 h=-&- v=-&- V:|-(20)-[WebFrameView:0x7ff1e1db9520]   (Names: '|':MessageWebView:0x7ff1e1d5fe20 )>",
    "<NSAutoresizingMaskLayoutConstraint:0x7ff1e376eef0 h=-&- v=-&- V:[WebFrameView:0x7ff1e1db9520]-(0)-|   (Names: '|':MessageWebView:0x7ff1e1d5fe20 )>",
    "<NSAutoresizingMaskLayoutConstraint:0x7ff1e39f4ae0 h=-&- v=-&- V:[WebDynamicScrollBarsView:0x7ff1e1d41080]-(0)-|   (Names: '|':WebFrameView:0x7ff1e1db9520 )>",
    "<NSAutoresizingMaskLayoutConstraint:0x7ff1e3d8b700 h=-&- v=-&- V:[MessageWebView:0x7ff1e1d5fe20]-(0)-|   (Names: '|':_MailNSClipView:0x7ff1e9b2e740 )>",
    "<NSAutoresizingMaskLayoutConstraint:0x7ff1e3dd7fb0 h=-&- v=-&- V:|-(20)-[MessageWebView:0x7ff1e1d5fe20]   (Names: '|':_MailNSClipView:0x7ff1e9b2e740 )>",
    "<NSAutoresizingMaskLayoutConstraint:0x7ff1e1d09d10 h=-&- v=-&- V:|-(0)-[_MailNSClipView:0x7ff1e9b2e740]   (Names: '|':MessageBodyScrollView:0x7ff1e9b38520 )>",
    "<NSAutoresizingMaskLayoutConstraint:0x7ff1e49b23a0 h=--& v=--& V:[MessageBodyScrollView:0x7ff1e9b38520(20)]>",
    "<NSAutoresizingMaskLayoutConstraint:0x7ff1e1d06180 h=-&- v=-&- V:[_MailNSClipView:0x7ff1e9b2e740]-(0)-|   (Names: '|':MessageBodyScrollView:0x7ff1e9b38520 )>"
Will attempt to recover by breaking constraint
<NSAutoresizingMaskLayoutConstraint:0x7ff1e1dd3820 h=-&- v=-&- V:|-(0)-[WebDynamicScrollBarsView:0x7ff1e1d41080]   (Names: '|':WebFrameView:0x7ff1e1db9520 )>
Set the NSUserDefault NSConstraintBasedLayoutVisualizeMutuallyExclusiveConstraints to YES to have -[NSWindow visualizeConstraints:] automatically called when this happens. And/or, break on objc_exception_throw to catch this in the debugger.
8/13/13 11:23:11.577 AM Mail[158]: Unable to simultaneously satisfy constraints:
    "<NSAutoresizingMaskLayoutConstraint:0x7ff1e3d4cc80 h=-&- v=-&- V:|-(20)-[WebFrameView:0x7ff1e1db9520]   (Names: '|':MessageWebView:0x7ff1e1d5fe20 )>",
    "<NSAutoresizingMaskLayoutConstraint:0x7ff1e376eef0 h=-&- v=-&- V:[WebFrameView:0x7ff1e1db9520]-(0)-|   (Names: '|':MessageWebView:0x7ff1e1d5fe20 )>",
    "<NSAutoresizingMaskLayoutConstraint:0x7ff1e3d8b700 h=-&- v=-&- V:[MessageWebView:0x7ff1e1d5fe20]-(0)-|   (Names: '|':_MailNSClipView:0x7ff1e9b2e740 )>",
    "<NSAutoresizingMaskLayoutConstraint:0x7ff1e3dd7fb0 h=-&- v=-&- V:|-(20)-[MessageWebView:0x7ff1e1d5fe20]   (Names: '|':_MailNSClipView:0x7ff1e9b2e740 )>",
    "<NSAutoresizingMaskLayoutConstraint:0x7ff1e1d09d10 h=-&- v=-&- V:|-(0)-[_MailNSClipView:0x7ff1e9b2e740]   (Names: '|':MessageBodyScrollView:0x7ff1e9b38520 )>",
    "<NSAutoresizingMaskLayoutConstraint:0x7ff1e49b23a0 h=--& v=--& V:[MessageBodyScrollView:0x7ff1e9b38520(20)]>",
    "<NSAutoresizingMaskLayoutConstraint:0x7ff1e1d06180 h=-&- v=-&- V:[_MailNSClipView:0x7ff1e9b2e740]-(0)-|   (Names: '|':MessageBodyScrollView:0x7ff1e9b38520 )>"
Will attempt to recover by breaking constraint
<NSAutoresizingMaskLayoutConstraint:0x7ff1e3d4cc80 h=-&- v=-&- V:|-(20)-[WebFrameView:0x7ff1e1db9520]   (Names: '|':MessageWebView:0x7ff1e1d5fe20 )>
Set the NSUserDefault NSConstraintBasedLayoutVisualizeMutuallyExclusiveConstraints to YES to have -[NSWindow visualizeConstraints:] automatically called when this happens. And/or, break on objc_exception_throw to catch this in the debugger.
8/13/13 11:27:20.473 AM Mail[158]: Unable to simultaneously satisfy constraints:
    "<NSAutoresizingMaskLayoutConstraint:0x7ff1e43614b0 h=-&- v=-&- V:[WebFrameView:0x7ff1e7be0d00]-(0)-|   (Names: '|':MessageWebView:0x7ff1e1ef54d0 )>",
    "<NSAutoresizingMaskLayoutConstraint:0x7ff1e3fd2940 h=-&- v=-&- V:|-(2.14748e+09)-[WebFrameView:0x7ff1e7be0d00]   (Names: '|':MessageWebView:0x7ff1e1ef54d0 )>",
    "<NSAutoresizingMaskLayoutConstraint:0x7ff1e48cdc60 h=--& v=--& V:[MessageBodyScrollView:0x7ff1e37e6630(2.14748e+09)]>",
    "<NSAutoresizingMaskLayoutConstraint:0x7ff1e1ee5170 h=-&- v=-&- V:|-(15)-[MessageWebView:0x7ff1e1ef54d0]   (Names: '|':_MailNSClipView:0x7ff1e1dfb780 )>",
    "<NSAutoresizingMaskLayoutConstraint:0x7ff1e3c580d0 h=-&- v=-&- V:[_MailNSClipView:0x7ff1e1dfb780]-(0)-|   (Names: '|':MessageBodyScrollView:0x7ff1e37e6630 )>",
    "<NSAutoresizingMaskLayoutConstraint:0x7ff1e3829ec0 h=-&- v=-&- V:|-(0)-[_MailNSClipView:0x7ff1e1dfb780]   (Names: '|':MessageBodyScrollView:0x7ff1e37e6630 )>",
    "<NSAutoresizingMaskLayoutConstraint:0x7ff1e3e968a0 h=-&- v=-&- V:[MessageWebView:0x7ff1e1ef54d0]-(0)-|   (Names: '|':_MailNSClipView:0x7ff1e1dfb780 )>"
Will attempt to recover by breaking constraint
<NSAutoresizingMaskLayoutConstraint:0x7ff1e3fd2940 h=-&- v=-&- V:|-(2.14748e+09)-[WebFrameView:0x7ff1e7be0d00]   (Names: '|':MessageWebView:0x7ff1e1ef54d0 )>
Set the NSUserDefault NSConstraintBasedLayoutVisualizeMutuallyExclusiveConstraints to YES to have -[NSWindow visualizeConstraints:] automatically called when this happens. And/or, break on objc_exception_throw to catch this in the debugger.
8/13/13 11:32:20.710 AM Mail[1441]: Using V2 Layout

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