Revision history [back]

same here:

[ INFO] [1319109792.329615682]: rviz revision number 1.6.4
[ INFO] [1319109792.329736412]: ogre_tools revision number 1.6.2
[ INFO] [1319109792.329762633]: compiled against OGRE version 1.7.3 (Cthugha)
    The program 'rviz' received an X Window System error.
    This probably reflects a bug in the program.
    The error was 'BadLength (poly request too large or internal Xlib length erro'.
      (Details: serial 17 error_code 16 request_code 155 minor_code 17)
      (Note to programmers: normally, X errors are reported asynchronously;
       that is, you will receive the error a while after causing it.
       To debug your program, run it with the --sync command line
       option to change this behavior. You can then get a meaningful
       backtrace from your debugger if you break on the gdk_x_error() function.)

It occurs since the last update of Ubuntu 10.10. The History of the Ubuntu Software Center shows that beside others xserver-common and xserver-xorg-core were updated. The same error occurs when I switch back to ros diamondback and then run the roscore and rviz.