Errors showing up in error log file - error reading the headers

Every so often I am seeing the followin error in my Apache error log.

What does it mean?

[Sun Apr 30 07:46:31 2006] [error] [client 68.76.127.143] request failed: error reading the headers

abstractionzAsked:
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sleep_furiouslyConnect With a Mentor Commented:
It's not likely to be your code.

It appears the client is sending bad header information, whether accidentally or deliberately.  It could also be a proxy server that's malfunctioning.
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sleep_furiouslyCommented:
It could be a hit from an attempt to exploit an old IIS WebDAV PROPFIND vulnerability.

It could be someone made an error putting together a request with hand-crafted headers.

It could be a client disconnected partway through sending headers.

etc.

In any case, the client sent a bad request.
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abstractionzAuthor Commented:
So basically, it is not a problem with my code, it is someone trying to exploit my site?
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