[Catalyst] Internal Server Error

[Ryan]

We have Cat. running from apache and when serving static content(.html)
with the Static plugin sometimes we get this....
--------------
Internal Server Error
The server encountered an internal error or misconfiguration and was
unable to complete your request.

Please contact the server administrator, root at localhost and inform them
of the time the error occurred, and anything you might have done that
may have caused the error.

More information about this error may be available in the server error
log.

Additionally, a 500 Internal Server Error error was encountered while
trying to use an ErrorDocument to handle the request.
-----------------------

and sometimes the page shows fine.  The apache error log dumps

--------------
[Tue Apr 11 07:52:37 2006] [catalyst] [debug]
**********************************
[Tue Apr 11 07:52:37 2006] [catalyst] [debug] * Request 424 (0.002/s)
[25356]
[Tue Apr 11 07:52:37 2006] [catalyst] [debug]
**********************************
[Tue Apr 11 07:52:37 2006] [catalyst] [debug] "GET" request for "[page
name remove]" from "67.153.124.120"
[Tue Apr 11 07:52:37 2006] [catalyst] [debug] Arguments are "[page name
removed]"
[Tue Apr 11 07:52:37 2006] [catalyst] [info] Request took 0.013780s
(72.569/s)
.------------------------------------------------------------------+-----------.
| Action                                                           |
Time      |
+------------------------------------------------------------------+-----------+
| /default                                                         |
0.001019s |
| /end                                                             |
0.000091s |
'------------------------------------------------------------------+-----------'
-------------


which really doesn't tell me anything. Anyone have any ideas on this
one?