Question -- Is there a bug in SOS u command??

When I use SOS u command to print JITted method, for example,  

0:000> !name2ee iserializable.exe SimpleGraph.Main
--------------------------------------
MethodDesc: 7b50b8
Name: [DEFAULT] Void SimpleGraph.Main(SZArray String)

0:000> !u 7b50b8

SOS should print a code segment of JITted method, but in fact it seems
there is a dead loop, the console can't stop printting the code.

Is there anyone know this problem??

Thanks


Hai