Jump in fps

[Cellebreth]

Ok, so here is the issue.
I am a wow player (yes, dont bash it) and I have been one since release.
However, sometimes my fps goes from a steady 30-60 to like 3-4 and then it bounces up after say 2-3 min.
Now, this is my laptop.
http://www.dell.com/content/products/productdetails.aspx/latit_d620?c=us&cs=28&l=en&s=dfb

I know the nVidia card isn't exactly for gaming, but it works and it should surely work better than that, right?
Now, I have been going over the drivers and I have tried to update as many of them as I could, but I'm not sure I have gotten them all. Seriously, am I just blind or is it difficult finding the right drivers..
I have also been thinking that it could be a heating problem, but I just dont know how to fix it if it is.
Could it be a process in the background suddenly does a refresh of itself or something?

This problem is torture, seeing as I can't play the game I love.. (I'm a hardcore raider so it is excruciating).
Any help is greatly appreciated.

-Celle

 

[tremmor]

these are all the drivers for your model. my guess you found this also.
http://support.dell.com/support/dow...mID=LATITUDE D620&os=WW1&osl=en&catid=&impid=

just choose your operating system and all category's.

 

[tremmor]

Found this also from dell. Take note of the 'Hot Topic'. something might be there that applies to you. this is for your model also.

http://support.dell.com/support/top...t_central?~ck=ln&c=us&cs=28&l=en&lnki=1&s=dfb

 

[Cellebreth]

Hmm, I've tried most of the drivers on that site alredy, but with no result.
You wouldnt happen to have any other tips?