Help attack of the frame rates... death in slow or choppy suspended motion!

I got a new rig to five box with and it has been working really well so far for me. I have the regular 1 pally and four shammy combo... but i really enjoy them a ton. I ran through all of outland feeling free and joyful all through outland. Yesterday i went to northrend for the first time. I was only getting between 10 and 20 frame rates but it was still just ok to play. I am in the Howling Fjord. Today i logged in and my frame rates are worse off than a fresh rolled group of level one alts in and end game raid with the Lich King himself! I was getting between 1 and 15 frame rates. 15 was as smooth as it ever got and it never got better than that. I am looking for ways to be able to up my frame rates so the game is playable. I have my different directory set up to be linked to use less resources.

Let me give you my comp specs:
OS: Vista 64 bit
Processor: AMD Phenom 9850 BLACK EDITION 2.5GHz Socket AM2+ 125W Quad-Core
Video Card: MSI R4650-D512 Radeon HD 4650 512MB 128-bit GDDR2 PCI Express 2.0 x16 HDCP Ready
Memory: pqi TURBO 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Dual Channel
Hard Drive: Western Digital Caviar SE16 WD5000AAKS 500GB 7200 RPM SATA 3.0Gb/s
Motherboard: JetWay JPA78VM3-H-LF AM2+/AM2 AMD 780V HDMI Micro ATX AMD
Case/Tower: APEVIA X-QBOII X-QBOII-NW-BK/500 Black SECC Steel MicroATX Mini Tower Computer Case 500W Power Supply
Display: Hanns·G HW-191DPB Black 19" 5ms Widescreen LCD + Hanns·G Hi-221DPB Black 22" 5ms Widescreen LCD

So this morning i was at 4 GB memory and when i checked running my five instances of wow was taking 80 to 90 percent of my memory so i thought memory was the problem and upgraded to 8 GB of memory today. I am now getting between 5 and 18 frame rates with this set up. This is still really low and hard to play, any suggestions or thoughts?

I read on the forums that windowed mode in the interface can really suck frame rates down and i turned it off and will see if it helps but i am thinking i am going to need to do something more major than that. How have your guys adjusted your video settings? Any other tricks? Does northrend really take that much more power? I am also going to do a manual driver check and update for my video card and see if there is anything there to be fixed or updated.

Confused. ;( :cursing:

EDIT:
I turned off windowed mode and closed down and then rebooted up but then windowed mode was on again so i am guessing that keyclone makes use of windowed mode and so it is auto selected with the maximizer function.

EDIT 2:
I updated my video card directly from the source i turned down many of the effects in the video effects options tab under the interface. I set the Resolution to 1440x900 widescreen and i am still getting only around ... 11, 10, 9, 12, and 11 frame rate when i just looked now at the instances currently running. My memory usage is at 59% (8 gig) and my cores are working at 70%/67%/34%/37% for each one when i looked just now. Still my frame rates are at 11, 10, 11, 18 (omg! 18) and 10. Still not sure what or where to adjust. I took the Multisampling down as well but i didn't see much of a jump in my frame rates.

are yeh setting cpu affinity?
do you have maxfps maxfpsbk set?
are you loading from one install or multiple installs?
what addon are yeh running?
what res are yeh running at?
have yeh reduce the graphics detail, view distance ... ?
Have yeh setup vista for performance?

are yeh setting cpu affinity?
A: I am not sure i will check with my buddy who set the comp up.

do you have maxfps maxfpsbk set?
A: Yes. I set 10 maxfpsbk and 30 maxfps for my main and 10 and 15 on my alts. I believe they were at 20 and 40 on my main and at 15 and 30 on my alts but i changed it in an attempt to help out the situation.

are you loading from one install or multiple installs?
A: I installed once for Wotlk and keyclone boots it up. I have five different folders and i can boot up from any one of them.

what addon are yeh running?
A: Macaroon, Jamba, Cartographer

what res are yeh running at?
A: i set res to 1400 x 900 widescreen

have yeh reduce the graphics detail, view distance ... ?
A: i did reduce graphics detail and view distance. I have view distance a click or two (setting or two) down from the top.

Have yeh setup vista for performance?
A: i believe so but i will ask my friend who set me up.

The odd thing is that it was running smooth before i adjusted anything in outlands and only hit this problem when i went to northrend. As far as i see it is not even a populations issue. There are some other players around but not a ton of them.

Very open to any advice on how to improve the frame rates.