It happens when uses firefox 2.0

[Jaime]

The program 'Gecko' received an X Window System error.
This probably reflects a bug in the program.
The error was 'BadMatch (invalid parameter attributes)'.
  (Details: serial 118 error_code 8 request_code 146 minor_code 3)
  (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.)

After install flash-plugin for firefox 2.0, It crashes

[John Vivirito (gnomefreak)]

Thanks for your bug report. Could you please try to obtain a
backtrace by following the instructions on
       http://wiki.ubuntu.com/DebuggingProgramCrash.
This will greatly aid us in tracking down your problem.

[Jaime (jim3k1)]

OK, I'll follow these instructions to obtain a backtrace of the problem

thanks

[Jaime (jim3k1)]

I can't make a backtrace of the bug. gdb gives me an error
Starting program: /usr/lib/firefox/firefox-bin
/usr/lib/firefox/firefox-bin: error while loading shared libraries: libmozjs.so: cannot open shared object file: No such file or directory
Program exited with code 0177.

If I try to install the library libmozjs-dev there are a lot of problems of dependences.

any idea????

[Jaime (jim3k1)]

If I make this change in the xorg.conf file:
replace DefaultDepth value inside the Screen section 16 by 24 and now firefox works fine, I visit pages with flash-plugin and It doesn't crash
I don't know why but firefox works for me

[Launchpad Janitor (janitor)]

[Expired for flashplugin-nonfree (Ubuntu) because there has been no activity for 60 days.]