Whats the Top 10 worst hacks 4 server load?

[bashy]

Hi peeps

I have lots of hacks installed as i am sure a few of you already know

I think because of this my server load goes from about 0.30 with 2 members
online upto about 2.0 with 8 members online and so on and so on.....

This in turn dramatically slows the forum down, so what i want to do is
remove (if its feasable) the worst hacks for server load....

Therefore i would like you all to list the worst hacks that you know
that cause a lot of server load and hopefully this in turn will help me to
trim the amount of 'ahem, hacks that i have installed an improved the
performance of our forum......

Or, is someone going to tell me thats its nowt to do with the hacks and its
all down to the crappy host i have