Request-URI Too Large settings help

Wed Apr 16 01:32:58 MSD 2008

Hi
I am getting this error:

Request-URI Too Large
The requested URL's length exceeds the capacity limit for this server.

request failed: URI too long

even with these settings..

    client_header_buffer_size   8k;
    large_client_header_buffers  4  8k;
    fastcgi_buffers      32 4k;
    fastcgi_buffer_size  4k;

this is the URL that is getting failed.. please help!

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thanks