Timer stops immediately after start with "You been idle!" on OS 10.7

[GoogleCodeExporter]

What steps will reproduce the problem?
1. upgrade to 10.7
2. start a timer

What is the expected output? What do you see instead?
I expect the timer to run.  Instead, as soon as one second passes, you get a 
message stating "You been idle!"  clicking yes causes the prompt again in 1 
second.  Clicking no causes an entry in the time log with no end time. 

What version of the product are you using? On what operating system?  Intel
or PPC computer?
Later 2010 MBP i7, OS 10.7

Please provide any additional information below.
Current workaround is ignore the popup.  When you are ready to end a timer, 
click yes, then very quickly click the timer stop button.

Original issue reported on code.google.com by delphyne on 21 Jul 2011 at 2:52