To add some data to the thread:
I use nonamescript, I have about 30 open channels (most with filled 3000 line buffers) on 4 networks, no ssl. After 3 weeks of running time, mIRC usage is about 30MB usage/peak/VM size. This is XP Pro SP1 with patches (and that cool Virtual Desktop Powertoy :d), and StyleXP for some really fancy MacOS X looks
. Logs are reaching in the 100's of MB, but don't seem to be making a difference (I clean them out on occasion).
