One thing I learn along the way is how to suspend a process. This is vital especially in playing Flash Game :)
How to suspend a process?
In Linux:
kill -STOP pid #suspend the process
kill -CONT pid #resume the process\\
In Windows:
You need to download the PsTools.. And use pssuspend.exe
pssuspend.exe pid #suspend the process
pssuspend.exe pid -r #resume the process
One thing I like about the latest Firefox is the plugins is running on a seperate Process. which is pretty good.
