Comment by sergekh: Firefox 3.5 plugin is available here: http://google-web-toolkit.googlecode.com/svn/trunk/plugins/xpcom/prebuilt/
To install download to local disk and open it in Firefox via File->Open File... For more information: http://code.google.com/p/google-web-toolkit/wiki/UsingOOPHM --~--~---------~--~----~------------~-------~--~----~ http://groups.google.com/group/Google-Web-Toolkit-Contributors -~----------~----~----~----~------~----~------~--~---