White MB keeps freezing up & I have to power off

[hndn]

Hi,
My white MB is too new to freeze up Yes, it's been 3 days, my MB keeps freezing up when I'm surfing via firefox and/or safari. Everything freezes up, I mean everything. I have to power off. In the last 10 min, it freezes twice already. How irritating!!!
Also, the trackpad seems to move slower & not very smooth.
I just installed 4GB 800MHz RAM (it recognizes as 800MHz)
Please help.
Thanks so much.

 

[iLog.Genius]

If you upgraded the RAM by yourself from a 3rd party, it's likely the RAM is to blame. Remove the new RAM and use only the one that came with your MacBook and see if the problem persists.

 

[BittenApple]

try making sure if the ram is seated all the way properly. otherwise you might have gotten (a rare) broken ram stick.