Router Worm?

[Chris Strom <cstrom () cos com>]

I've received a strange HTTP request on my web site from two  different sources.  The request is logged as:

SEARCH /\x90\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02
\xb1\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02
\xb1\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02
\xb1\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02
\xb1\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02
\xb1\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02
\xb1\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02
\xb1\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02
\xb1\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02

The request continues for a total of 32732 characters long (not shown).  I was able to access one of the sites on port 
80, here's the server response.

Date: Tue, 15 Mar 1966 05:03:04 GMT
Server: Allegro-Software-RomPager/2.10
Content-Type: text/html
Last-Modified: Mon, 25 May 1998 00:00:00 GMT
Client-Date: Wed, 19 Nov 2003 14:07:57 GMT
Client-Peer: xxx.xxx.xxx.xxx:80
Client-Response-Num: 1
Title: Netopia Router (192.168.1.1)

Apologies if this is a known issue or if this is the wrong forum for this information.

Chris