apaceh 2 on xp pro -- strange access log entries: "SEARCH /\x90\x02\xb1..."

From: TheKeith (no_at_spam.com)
Date: 07/28/04 

Date: Wed, 28 Jul 2004 14:58:53 -0400

these strange log entries go on for many lines and on the end of the
last line says, 'HTTP/1.0" 414 352'

I'm not sure what the 352 code is but I believe the 414 indicates that
the request is too long, correct?

Anyway, should I worry about this--I'm running apache 2 on xp pro? Help
would be appreciated--thanks.