This is most likely normal for your Computer.
I use Mcafee and It usually takes 2 min for BFAHP to start when I login. then about 10-20s to load when I change floors.
AS for switching screens and things like that, I do it all the time, I usually have around 5 applications running at once, and if you have issues with switching between things it is most likely that your PC is THrashing. You proboly have 512Meg or 256 Meg of RAM and when Mcafee was installed it caused the PC to start swapping Memory between the Swap File and Physical Memory. This can be checked through many different ways, but the easiest way to check is if there is a light on your PC that flashes a lot when you are switching screens That light would be the Hard Drive activity and somtimes you can also hear little clicking that is the mechanical arm inside the Hard disk. So if you have one thing open, things are OK, but once you open more things The preformance degrades. It is also posible that the Video Card may be causing some of the issues but that is rare. Either way, It is not always worth upgrading because of the cost. (Particularly if you need to pay for the installation and parts)
I have seen many Windows machines suffer with bad Preformance after installing Antivirus or other scanning type applications. typically these computers are several years old. There are ways to increase the amount of free memory and performance. but that gets a bit complicated.
Monty
