We know you cannot dual boot Windows with Linux and use Rollback Rx at the same time But you can run windows as your main OS and run Linux inside of a Virtual Machine.
Many of you already do this so your asking what's the big deal?
You can make your Linux (or other VM experience) much better if you use Virtual Box because there is a tweak to allow you to increase your video ram for graphics from the max default of 128 to 256 Megabytes of ram.
The info is here and it involves making one change to an XML file.
Virtualbox please allow more video memory (View topic) • virtualbox.org
I have tested this and it appears to work. Your memory slider in Settings/Display of your VM will now go up to 256 MB of ram. I didn't test it with Linux, only Windows XP, but the Virtual Box graphics adapter setting page inside Windows does report that the video adapter is using 256 MB of memory. I assume the same graphics adapter equivalent in your Linux distro will say the same. The function is one of Virtual Box so it should not matter what type of VM OS you are running.
Perhaps this may help some folks get a little better performance out of their Linux VM enough to satisfy them.