As I said, with the lack of information given I can't say what is normal for your system and the outpost modules you had installed and settings that you used.
op_mon.exe (outpost monitor) on this system is currently using 20MB and in the bigger scheme of things 20MB is small bear compared to many other applications, firefox 391MB, MBAM 89MB, thunderbird 119MB, Mailwasher Pro 75MB, Explorer 42MB. This is Task Manager, VM Size.
Am I concerned about any of this NO, I have 2GB of RAM (probably less than you), memory is there to be used, but the major thing is that I don't see any slowdown on my system or internet connections, see image of a speedtest.net check done today.