Im having problems with my acer 4520G its been crashing and also occasionally flashes the ever so problematic BSOD.. I had it repaired in the service center, all they did was reformatted and reinstalled the vista but but still it keeps on doing the BSOD! i had an extra 2gb ram installed in my laptop the day i bought it. Any suggestions? please! i really need to use my laptop efficiently without the fear of getting the BSOD!