Mozilla V1.3.1 crashing on FreeBSD 5.1-C (older cvsup level)

[Tom Parquette]

Periodically, Mozilla V1.3.1 will appear to crash on some web sites.
I finally got the following messages out of it.  It's not much but I was 
hoping someone might have an idea.

This was from an attempt to point at www.historychannel.com.  TIA

$ export DISPLAY=Stargate.Tom.Parquette.name:0
$ mozilla
No running window found.
/dev/dsp: No such file or directory
open dsp: No such file or directory
Gdk-ERROR **: BadAccess (attempt to access private resource denied)
   serial 26 error_code 10 request_code 147 minor_code 1
$