Running gtk+ applications over ssh causes an X error. The same gtk+ apps work if
I copy them locally and run them. The problem seems confined to gtk+ programs;
qt and motif work fine. I have tried gtk+ 2.4.1, 2.4.5 and 2.4.9. X is xorg
version 6.8 but the problem also appears with 6.7. If you think this is an X
bug, let me know and I'll go quietly ;)

Here are some errors. What further information would be useful?
The program 'gaim' received an X Window System error.
This probably reflects a bug in the program.
The error was 'BadWindow (invalid Window parameter)'.
  (Details: serial 175 error_code 3 request_code 2 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.)

The program 'gkrellm2' received an X Window System error.
This probably reflects a bug in the program.
The error was 'BadAtom (invalid Atom parameter)'.
  (Details: serial 1158 error_code 5 request_code 20 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.)