Who says .Net can’t be fun?
or at least, mildly amusing on a dull afternoon…
“The CLR has been unable to transition from COM context 0×21b378 to COM context 0×21b4e8 for 60 seconds. The thread that owns the destination context/apartment is most likely either doing a non pumping wait or processing a very long running operation without pumping Windows messages. This situation generally has a negative performance impact and may even lead to the application becoming non responsive or memory usage accumulating continually over time. To avoid this problem, all single threaded apartment (STA) threads should use pumping wait primitives (such as CoWaitForMultipleHandles) and routinely pump messages during long running operations.”

August 19th, 2009 at 5:24 pm
So what’s the problem? Seems perfectly normal. Maybe you might want to look at a MTA or an FTA (though that might not fix it).