2000 or 2003 app slow in Access 2007 (Vista)

Hi all,

So I bought a new laptop 10 days ago to test my apps with Vista. (home premium)
Apparently Office 2007 is pre-installed. (a time limited but complete test version, no SP1)
So I take the opportunity to test some new features of Access2007 before actually 'stepping over'.
First thing that troubles me of course is 'the ribbon', but my question now is about speed.

I opened one of my Access 2000-apps in Access 2007.
Speed and responsiveness is bad! It appears to me like 'wading through the mud'.
Opening an unbound form takes 2-3 seconds... Closing a form also...

After converting the app to Access 2003 format speed is the same (bad)
Even after converting to Access 2007 accdb ....

In Access 2000 or Access 2003 the app is 'snappy'.

Tested with a couple of more apps, but I am getting the same results.

--Name auto correct is off
--Backend (Acc2000) with subdatasheets <none>

Tried to install SP1 but that install simply failed...
Checked references, tried decompile, tried compact, tried import in clean db and such.

Any idea's ? I must be missing something obvious here...

Arno R
.