1. While it is hanging I take a memory dump of the process using
adplus -p <PID for the IExplore.exe process> -hang
2. I open up the dump in windbg and set the symbol path
.sympath SRV*c:\websymbols*http://msdl.microsoft.com/download/symbols
.reload
3. I load up sos.dll from the silverlight directory
.load C:\Program Files (x86)\Microsoft Silverlight\2.0.30523.8\sos
Start Debug:
0:010> ~* e !clrstack
!dumpheap -type Exception
06307110 1 72 System.Exception
0:010> !dumpheap -mt 06307110
Address MT Size
0638d870 06307110 72
0:010> !pe 0638d870