I see a lot of the following in our log. Anyone know what might be causing this?

[info] 15399#0: *15062 client *.*.*.* closed keepalive connection (104: Connection reset by peer)
[info] 15401#0: *15199 client *.*.*.* closed keepalive connection
[warn] 15399#0: *14910 an upstream response is buffered to a temporary file /tmp/fastcgi/7/07/0000000077 while reading upstream, client: *.*.*.*, request: "GET /page.php?e=29306 HTTP/1.0", upstream: "fastcgi://127.0.0.1:9000", referrer: "http://forum.forum.com/page2.php?g=5"