I feel a bit paranoid when pressing over the items in the project files drawer because TM seems not be so clever with respect to the contents of the files and sometimes it gets in an infinite loop.
I receive many students works with uncontrolled contents. The last was a .txt file (output from a test) with 128Mb of anything. Of course I did know that the file had 128Mb after TM hanged, I killed it and saw the Finder info for the file.
Shouldn't TM have a better protection against this?
-- Juan Falgueras