After a great deal of debugging/troubleshooting, we have narrowed this issue down to an IIS7+ issue currently with the installation of Web Access.  Currently we create an Application Pool to run Web Access and set the 'Managed Pipeline' to 'Integrated'. Switching this 'Managed Pipeline' to 'Classic' mode appears to resolve the issue.  Quest Support also has a Knowledge Base article on this issue now.
From the beginning we have this strange issue: Customers with Internet Explorer report that the vworkspace web interface is extreme slow. When they login and click on their virtual desktop, it starts loading something, but nothing is happening. Normally you would see a popup screen telling the user that the desktop is starting up or something.  It almost looks like Internet Explorer is waiting to get data and then after 2 minutes it finally starts doing something. We have not seen this behavor with Firefox. It only happens with IE and mainly in combination with Vista/Windows 7.  We had a support ticket open for months but the support guys couldn't reproduce it or didn't know what to do. However people keep complaining "This VDI is very slow" ... they mean the startup.  I have included a video so you can see exactly what I mean. If nobody in this community knows what this is, then whats next??  vworkspace video capture  Message was edited by: René Kemp Changed topic title
2 minute delay on opening .pit file (from DMZ / SSL gateway)