Performance problems with iTunes 7.4.3.1 + Vista

I've got a really annoying problem since "upgrading" my PC to Vista Ultimate (actually it was a clean install).
Vista all working and performing fine. Download and install iTunes + import lib. When I went to use iTunes as soon as I open it it's already starting to struggle. It pauses a few times when opening then eventually is operable. I use the "Cover Flow View" when looking at my library and scrolling back/forward is nasty. Very sluggish and slow. Firing up a video is the same. It's very choppy.
After searching I've tried the tricks with disabling Direct3D etc. in Quicktime but not surprisingly it's made no difference.
One thing to note is that my soundcard (m-audio 24/96) is not yet supported and is disabled in device manager. Not happy about this but I figured I could still use itunes+ipod so not the end of the world (yet). I doubt this would cause this problem but you never know.
Additionally my itunes music folder is pointed at a share on my network. Always has been from day 1 on 100mbit and it worked fine and I'm now on a gigabit LAN. Again, I doubt this should make any difference.
PC vital stats are below. Hardly cutting edge any more I know but still more than capable.
P4 3ghz (sock 478 version)
2GB Ram
Nvidia 6800GT
Vista Ultimate
iTunes 7.4.3.1
5th gen iPod
I'm getting really irritated by this problem now
Any ideas?

divtag wrote:
Very strange. Yesterday all the problems magically disappeared! It's now working perfectly.
I loaded about 30GB of lossless tracks into the lib and did some seemingly unrelated windows updates yesterday but that's it. I guess there might have been something in one of the updates so we'll see how long before another one breaks it again.
It has nothing to do with windows, or any updates from microsoft. iTunes is coded by Apple, and poorly at that. Many suspect they do it on purpose because it is in their interest to trick the dumb minded public into thinking that a Mac is faster than a PC. Which isnt really possible since they run on the same hardware now.
There can be slight performance differences due to OS, but there is No way in **** that windows would ever slow down iTunes to its present state.
Windows Media Player is silky smooth and winamp is even smoother......
iTunes is horrible.
The features and tools are nice, the hardware it syncs to (ipod iphone etc) are all lovely... Its just too dam bad us Windows users get NO support from Apple what so ever.
Its payback for what Microsoft did with the windows media player on the mac. WMP was programmed like crap on the mac, and they eventually just stopped developing it for the mac. MS has no interest in Apple looking good, and Apple has no interest in windows looking good.
Its a dam shame too, because as they pull these BS games with each other, they ignore us users, who have paid our hard earned money for their products.
Message was edited by: DwindleFlip

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              durationFormat.setMaximumFractionDigits(4);
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