Progress Monitor Dialog doesn't close when trying to load a partially-selected set of tests

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What steps will reproduce the problem?
0. Run Icarus
1. Open a test assembly with a significant number of tests (eg. the NHibernate 
2.1.2 GA tests NHibernate.Test.dll)
2. Uncheck the root test, and recheck a single test (sub) node (eg the 
NHibernate.Test.ByteCode namespace)
3. Close Icarus
4. Rerun Icarus

What is the expected output? What do you see instead?
Expect to see Icarus load the test assembly and check only the ByteCode node 
(and children).
Instead, the progress monitor appears to stall at 95% (Restoring test filter). 
Any attempt to close the progress monitor dialog results in an 
ObjectDisposedException.

What version of the product are you using? On what operating system?
3.3.174+ on Windows 7 x64

Please provide any additional information below.
I can reproduce this every time with the above steps

Original issue reported on code.google.com by wayne.br...@gmail.com on 12 Jan 2011 at 2:41

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Also, this only (and always) happens when the tree is in "Namespace" mode -- 
when in a "Metadata" mode I can't get it to occur.

Original comment by wayne.br...@gmail.com on 12 Jan 2011 at 2:44

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Also, only seems to happen when Icarus was closed with the "Execution Log" tab 
open

Original comment by wayne.br...@gmail.com on 20 Jan 2011 at 10:55

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Can you reproduce with the debugger attached? Is it spin-waiting again?

Original comment by grahamr...@gmail.com on 26 Feb 2011 at 1:34