...so u have upgraded to UBuntu 9.10 and you are really impressed with its new features and you cannot control your excitement to check out your development environment and launch eclipse .. but oops! you are not able to create a new project.. none of the buttons seem to work chances are you are also suffering from the same bug follow the link for the fix
This issue is resolved in eclipse 3.5.2 M2 release. Hope that helps.
