HTTP redirect intermittently working

Any chance that the request URI doesn't exactly equals "/jazz" - different case, additional content/query string added? Something like this would catch these two cases:

when HTTP_REQUEST {
    if { [string tolower [HTTP::uri]] starts_with "/jazz" } {
        HTTP::redirect "http://myurl.com/default.aspx?pagedid=160"
    }
}

I can reproduce this issue using lowercase, so forcing the code to use lowercase did not resolve the issue of it intermittently working. Thanks though...

I'd probably recommend some logging as a next step then:

when HTTP_REQUEST {
    log local0. "Requested: -[HTTP::uri]-"
    if { [HTTP::uri] equals "/jazz" } {
        log local0. "Redirecting"
        HTTP::redirect "http://myurl.com/default.aspx?pagedid=160"
    }
}

Then look for "Redirecting" in the logs and the URI value right before it.

do you really not get redirected or does reaching the redirected page fail? if it is the first (check with some http browser plugin) then start tcpdump on the big-ip to check if the redirect isn't send.