Just checked and it's at 1.91 GB. Of course, I'm a map whore. I have over 400 maps (>300 DM, >90 CTF, the rest are DOM, AS and mod-specific maps). Have >50 skins, >50 voices, Fragball 2 mod, U4E mod and RealTournament mod.
I try to keep the mods to a minimum, because the more you have the more problems you can have. This has been installed since day 1 (6-4-2000, then v436 when it first came out) and no problems. Of course, the problem with having a lot of maps and playing a lot of different maps is you never quite learn too many specific maps very well. And, even though my skills might increase, not knowing the map does not help in winning the match. Oh well, Happy Fragging!
SkaarjMaster (aka Someone Else)