As an quite enthusiastic Enemy Territory fan, I encountered an annoying "bug", especially in connection with the No Quarter plugin. The game sometimes hangs with a "hunk memory allocation" error.
Reason, is a extremely conservative client’s setting for ram usage. Per default, only 56 megs are assigned, which becomes tight when you use a mod, a sound package and play a big map (like fuel dump).
The resolution to this problem is as simple: Generate a file called autoexec.cfg in your etmain folder. It may only contain the following line:
set com_hunkmegs "128"
That setting forces the client to allocate enough memory so the problem should never occur again. Of course you can also use higher numbers, depending on your pc’s ram configuration.