I have the same issue as reported here:
http://groups.google.com/group/nhprof/browse_thread/thread/3ac4e0e1c5a6f66e/1495aced7fe21a05
I am using build 878. When I run NHProf I see the temp file created
get large, 8GB, 12GB, etc. When I close NHProf the files are not
removed.
When I use Options->Clear - the temp files are deleted and new ones
are opened. I would expect them to clear on exit. After several
sessions my hard drive fills up.
I am running a large application using NServiceBus with about a dozen
host agents each with their own SQL database.