Comment 21 for bug 679917

The filename are all very unixy and does not look good on windows.

Furthermore, if you hold a handle to a file you can not rename the same file in a second instance. So this will break.
Also this will show unpredictable behaviour if you open more than 10 instances (unlikely, but possible).

Also it would be nice to have a clean up routine and to have the possiblity to deactivate this function.