Anyone seeing that Kext file that is bouncing? Here is an easy fix for Leopard: Go to /Library/Extensions
And open up the contents of the file called "VirtualPCNetworking1040.kext" (right-click and select "Show Package Contents"). Then, open up the Contents folder. Double click on the Info.plist to edit the file. It should bring up the Property List Editor. Add a new child to the Root. Call it "LSUIElement". This will be a class of String and the value needs to be "1" (one). After this save the file (you may need to save it to your desktop first, then copy it over so it can validate your permission). Close up everything and start up VPC. The bouncing Kext should now be gone! p.s. If you do not have the Property List editor, just open up the info.plist file in the Text Editor. Then, inbetween the <dict> properties add the following:
<key>LSUIElement</key>
<string>1</string> Save the file and you should be done!

Archived from group: microsoft>public>mac>virtualpc