I'm using Parallels 6 on my desktop machine, and running OS 10.5.8. I kept getting pop-up messages about Parallels Build 6.0.12106, so yesterday I finally allowed it to download and install. Now Parallels can't load at all. When I start Parallels, I get this: "Your virtual machine may run slow because virtualization support is disabled on your Mac. For optimal performance, please enable hardware virtualization support in your Mac's firmware." So I click "OK" and get this: "Unable to load the Parallels driver. Restart your Mac and try again." Restart does no good. I'm now finding out that Build 6.0.12106 is intended to improve performance with Lion. Why would I get messages asking me to download it when I'm not running Lion? And more important, what do I do now? - Buy a reload for my former version of Parallels 6? - Upgrade to Lion? (Snow Leopard first?) Any insights would be appreciated. Thanks!