Why is my forum so slow?

[Cazzzidy]

Hey guys,

I have a pretty medium sized but full featured forum. I am switching from phpBB and am about to take it live.

The problem is, the site is SLOW. I don't remember it being like this before, but I did the big import today.

Check it out: http://community.190revolution.net

And check out the old phpbb forum running on the SAME server: http://www.190revolution.net
It is a lot faster!

I am running the following
VB 3.6 with vbStyles.com Aria theme
PhotoPost Pro
vbAdvanced CMPS
vbAdvanced Links Directory
FlashChat with Flash Chat Integration and "Who is chatting"
vbSEO 3.0 RC4 with standard configuration.

It seems like the page loads are quick, but it hangs hard before it can get going. The server load with just me tooling around and doing DB work are 1.0X ish. It is running on a shared server at A Small Orange. It is running on Linux with PHP 4.4.4

Does any one have any ideas on how I can trouble shoot or improve this problem? And also, I'd love to hear what you guys think of the site... I'd like suggestions and criticisms.

Cassidy