xorg 6.9.0 mem leak

[Randy Bush]

> http://forums.mozillazine.org/viewtopic.php?t=354828#memcache
> And set the maximum memory cache to 8000 or 16000, then see if this
> problem persists?
> about:config
> Create a new integer key, named "browser.cache.memory.capacity" and
> assign a value in KB for the cache size.
> about:cache
> Maximum storage size: 16000 KiB  (or whatever you set it to).
> Watching xrestop, the Pxm mem value for Firefox should not exceed your
> maximum set.

no change.  note that it seems to not be using all of the
cache as set.

Memory cache device
Number of entries: 	873
Maximum storage size: 	32000 KiB
Storage in use: 	26533 KiB
Inactive storage: 	1665 KiB

randy