Premiere CS5 post alt-tab freeze

Question

Hi all
I have this problem with Premiere CS5 (but I had it with ALL previous versions...)
If I import a lot of clips (let's say 100, a normal amount for a normal edit) - in this case P2 clips, but images or other format is the same, everything works fine.
Whenever I try to switch back and forth from/to PPRO CS5 using ALT-TAB or mouse click on windows app bar, Premiere "freezes" for many seconds, sometimes MINUTES, I would say in proportion with the number of clips in my project. It seems like every time I switch back to Premiere, it loads all the clips again, or check them or something like that.
Since going to Photoshop or another app is very frequent during editing, this is really frustrating.
I tried on many different machines, all Quad cores with 8 gigs of RAM, so in general powerful systems, but the problem remains.
It is not a disk read problem because Premiere SHOULD NOT READ anything switching back to it, and anyway I have fast disks and a 100 MB/S NAS.
Something I am missing? Some hidden switch...?
Or a terrible BUG, that continues from the beginning of the creation of Premiere?
By the way, Windows system, at the moment Win 7 64bits, but this bug was there with Vista, XP32... etc.
Thanks
Valerio Oss
PIXEL CARTOON

Answer 1

Add my name to the list of having the "Not Responding" message come up every time I click anywhere outside Premier Pro.  It takes 10 seconds (sometimes longer) before Premier Pro CS5 becomes available again and attempting to work before this delay is completed causes the screen to become a white tranlucent which will change back to normal after the 10 second delay.  The Not Responding message is displayed after about 5 seconds
The computer in question is Win7 x64 with an i950 processor, 24 GB of ram and a four drive RAID 5 configuration.
On the good side, from what has been written here it looks like in PP CS5.5 this issue is resolved. 
This makes having acquired PP CS5.5 a little easier to swallow.  Now if only Adobe would deliver the DVDs... Yes I know it can be downloaded, but I really don't want to download the Master Suite trial version this time while I'm waiting for the DVDs
Cheers,
Michael
Ps. when editing with a file from an external RAID volume, connected via Silicon Image Sil 3132 SATALink Controller, the "Not Responding" message takes more than 13 seconds to get back to normal.