About the PF, hmm... The coldest I can ever get out here in the Motherland is around 19c with aircond, so I wouldn't know... But actually, isn't it better for computer electronics to work under cold temps, that's why they have heatsinks and all, rite?
And another reason why PF can be so huge (and your available physical is so low) is background programs, check your SysTray... I only have 9 icons (Switcher, Samurize, Avedesk, Bluetooth, I8kfanGUI, Battery, Networking and Sound), any more then 15 icons and you're in trouble... And check for spyware/malware/adware/viruses, they tend to eat up phys and bloat the PF as well....

Other then that, Windows services... But that's a bit techie to talk about...
But the PF would not grow that large unless it NEEDS to grow that large... And for it to NEED to grow that large, I'd say you're either pushing (knowingly OR unknowingly) the programs into the pagefile from the main memory (memory optimization programs tend to do that, and it's not really good...
that's why I STAY AWAY from such programs) or you're not running with enough memory to begin with... :peace
Check your startup folder (and use msconfig... tell me if you need a tut for that) to see what you're running at startup... My pagefile hovers at 800MB so 2GB is quite a problem...

Thanks man, and dun shy-shy to PM me or anything if you got any problems... I'll try my best to help!

i think something wrong with my startup setting...2 reboot and everything will b ok,but if it is left turn off for sometime,the PF will..u know the rest...when i saw tat happen,my blood pressure rise along with it...darn..my systray start with BT,avg,mcafee firewall,touchpad stuff,riva etc etc,not more than 10...im still in process of thinking wat might cause it...trying my best not to lead to formatting,
my pf usually float at arnd 400mb...so 2gb was like..argghhhh....dun mention it..