[vwnc] VW 7.6 -- web using perl gateway problems serving up files

We are using Apatche22, with the VW perl gateway.

We have a ref to say "abc.css" which comes back to VW which
serves up the file.

most of the time (say 75% of the time) all is fine.  However, ever
so often instead of getting the file in a fraction of a second, it
takes maybe 5 seconds, and apache logs an error
    did not send an http header -- for "abc.css"
and the result is then an empty cached .css file in the browser.

Anyone else seen this kind of problem?  It happens on multiple
apache servers, different VW apps etc -- same result.

Before the problem occurs, everything is fine -- after it occurs,
no .css so the page is damaged on every re-draw or new page
due to the bad (empty) cached css file.

Note that happens to image files as well.

--
Dennis Smith                         +1 416.798.7948
Cherniak Software Development Corporation   Fax: +1 416.798.0948
509-2001 Sheppard Avenue East        [hidden email]
Toronto, ON M2J 4Z8              sip:[hidden email]
Canada         http://www.CherniakSoftware.com
Entrance off Yorkland Blvd south of Sheppard Ave east of the DVP

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