VMWare is warning its Fusion customers away from the Mac OS X 10.5.7 update if they are using an ATI graphics card. The 10.5.7 update was released Tuesday, and VMWare said that a byproduct of the update is that it disables a key component used in running Windows through Fusion, the company's virtual machine solution for Mac OS X.
In a blog post, the company wrote Thursday, "if you rely on VMware Fusion's 3D Acceleration feature to run either Windows games or other Windows 3D applications in your virtual machines, we recommend that you do not upgrade your Mac to 10.5.7."
The company said the update breaks the 3D acceleration feature used in Fusion. Users, "will likely see issues ranging from slow performance, to incorrect rendering, and even crashes, when you run your 3D applications in a Windows virtual machine on Mac OS X 10.5.7."
VMWare also said that both ATI and Apple were aware of the problem and working on a fix.