Performance problem after upgrading from home to ultimate

[masterswipe]

Hi, i have a dell m1330 laptop, about 2 months old. Specs are>
Intel core2 duo cpu [email protected]
3gigs ram
220gigs HD

It came installed with vista home premium but yesterday i bought the vista
ultimate upgrade dvd. I inserted the dvd and upgraded as per instructions. It
was completed without any problems.I've installed all important updates and
rebooted the computer many times.

Now my laptop runs really slow, takes a longer time to boot up -about 3 or 4
mins now. In my sidebar i have a CPU meter and usually both cores run at
less than 50 percent but now it jumps around 90-100%?? The graph looks like a
lie detector when charles manson answered no to the question if he killed
anyone??!! BTW im not running anything except firefox

Please help?? Why is this so and how can i fix it?

 

[masterswipe]

More information:i have mcafee security centre and i forgot to deactivate it
when updating, i think it is taking up all the resources as shown on task
manager-resource overview

 

[Mick Murphy]

http://www.avast.com/eng/download-avast-home.html

Get rid of McAfee; it is a resource hog! norton, trend-micro are the same!
Use the above; Avast
32bit and 64bit Vista compatible.

 

[masterswipe]

Yeah, i uninstalled crapafee security centre amd wiped it off my HD, now its
working fine!

 

[Mick Murphy]

You wonder how they have the guts to keep selling that crap, when they know
the problems it causes.
If you or I sold used cars like it, we would be in jail!

 

[nohandleforme]

I don't find the statement that Trend Micro is a resource hog to be true for
me. I am having terrible performance problems so I have selectively disabled
various services. When I disable Trend and turn off the Trend services, I can
verify that there are no Trend processes running in Task Manager but my
performance is as bad as always. I have disabled all non-essential services
(and even some essential ones like Virii) and my performance issue remain. I
have not found the culprits. It seems to be related to the file system (but
I have turned off WIndows search). I have a dual core T5700 2.2GHz with a
SATA 7200 and 2GB RAM - the performance problems are crippling.