Problems caused to the plugin by some internal changes and new features in WordPress 3.0 are now fixed. Meta boxes for ratings work again on pages, and also plugin has support for custom post types. Support for them is not full, but everything should be working.
As reported by some users, there are some problems with GD Star Rating and WordPress 3.0. These problems occurred after RC2 release of WP 3.0, and they only affect some elements of administration. All plugins panels and ratings are working fine.
GD Star Rating is no longer on the BlueHost hosting. Yesterday I have moved the website to much faster and powerful VPS server hosted by VPS.NET. This will improve both initial response and loading time and general availability of the website.