I know your site, and it's all your hotlinked stuff that slows it down. No need to waist time on trying to make it faster, really. Only chance is to make a real site, OK? Nothing more, nothing less...
But you saw my friends site right? Hes using Php nuke,and he has more ads than me.. His pictures are from diferent hosts,but my pictures are all from my host...
Use less ads and pictures all together, and host your content on your server and there will be no problem. One single ad script or hot linked image can slow your site down a lot. There is no bug, your problem has nothing to do with PHPFusion, bebriuxs.
What do you will the site run faster if I go to the hosting company whitch offers:
3000 MB Disk Space 200 GB data transfer 256 MB guaranteed RAM 512 MB burstable RAM Server CPU Hardware - Dual Xeon Unlimited Web Sites 1 Static IP Address