My experience was like PatrickDickey's. I have a Gateway CX200X with a Mobility Raedon X600 video card. I disabled the proprietary flgrx driver, performed the upgrade to Ubuntu 8.10, and then activated the proprietary flgrx driver. No problems! 3D acceleration works as well as it ever did. The bootup is much faster than 8.04 as well.
My experience was like PatrickDickey's. I have a Gateway CX200X with a Mobility Raedon X600 video card. I disabled the proprietary flgrx driver, performed the upgrade to Ubuntu 8.10, and then activated the proprietary flgrx driver. No problems! 3D acceleration works as well as it ever did. The bootup is much faster than 8.04 as well.