Thunderbird error on frest 5.4 install

[Chris]

On a fresh install of 5.4-REL, I installed Thunderbird after cvsuping 
the ports tree, I get this error when launching TB.

/home/moo> thunderbird
The program 'Gecko' received an X Window System error.
This probably reflects a bug in the program.
The error was 'BadValue (integer parameter out of range for operation)'.
   (Details: serial 2002 error_code 2 request_code 53 minor_code 0)
   (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.)
/home/moo>


Any ideas?


-- 
Best regards,
Chris

There is nothing more frightening than ignorance in action.