mono/monodevelop — pull request #518 by DavidKarlas (2014-04-03 18:29:44+00:00)
Title: Win32 debugger locking DLL/PDB files

I ran MonoDevelop in Memory profiler and checked what is holding CorSessionDebugger... Once CorSessionDebugger object was collected by GC. DLLs/PDBs were not locked anymore... Hopefully I tracked all cases... ;)