But when you check the use of RAM memory in your machine... (maybe with the command "top" or the command "free") don't you notice a increasing amount of RAM used without being released? As i mentioned i have this problem.. this is a snippet of the output of the "top" command in my machine: PID USER PRI NI SIZE RSS SHARE STAT %CPU %MEM TIME CPU COMMAND 11760 root 15 0 590M 516M 2396 S 0.9 51.2 68:15 0 mediaproxy.py 51.2% of memory used? What version of pyhton are you using?, what OS are you using?. Thanks!