On Tue, 7 Mar 2006, Jan Schaumann wrote:
[...]
> visiting a website with firefox causes X to spin out of control and log
>
> _XSERVTransSocketUNIXAccept: accept() failed
>
> in the logfile.  It will continue to log thousands and thousands of
> these until eventually the disk is full.
>
> Has anybody else seen this?  I have not yet found a way to reliably
> reproduce this, but it is happening often enough to be a severe problem
[...]

When I had problems with the above error msgs filling my /var,
I simply raised the 'nofiles' limit for the X server. I think
the problem occurs with clients using lots of true-type fonts,
since most of the open file descriptor of the X server were
some of these fonts when the error occurred.  At least with
the version of X used here, changing the 'nofiles' for a
running X server with sysctl did not fix the problem -- only
raising the limit before X started worked.

HTH
Holger