w7 with 6 Go isnt enough at all for 5 accounts.
Go and check in dalaran, you ll see a huge difference between sw.

You disable all w7 logs files ?


PC Asus P6T / i7 920@2.66GHz / 12Go RAM ddr3 1600 /raid0 adaptec 2405 + 4 ssd solid core 30Go / velociraptor 300Go /OS W7x64 / samsung 500 / sapphir 4870 / 5 wow
My main in maxi full 24in , 4 clones 1024x768 middle see and other low.

and memory in use near .... 11Go for 12Go