As I previously mentioned, Akamai Technologies is actually a major integrated part of the internet, their distributed content servers are used by many if not most of the major internet sites (Microsoft for example uses Akamai quite extensively). It certainly sounds as if this is just a delayed response for a normal http request that has timed out or has otherwise been terminated.
Here is the basic information on that IP address, which appears to be an AkamaiGHost server running on a Qwest circuit:
webhost:/ # nslookup 126.96.36.199
188.8.131.52.in-addr.arpa name = 63-147-82-91.dia.static.qwest.net.
webhost:/ # whois 184.108.40.206
Qwest Communications Corporation QWEST-INET-8 (NET-63-144-0-0-1)
220.127.116.11 - 18.104.22.168
AKAMAI TECHNOLOGIES INC Q0302-63-147-82-64 (NET-63-147-82-64-1)
22.214.171.124 - 126.96.36.199
# ARIN WHOIS database, last updated 2008-05-23 19:10
# Enter ? for additional hints on searching ARIN's WHOIS database.
webhost:/ # nmap -A -p80,443 188.8.131.52
Starting nmap 3.50 ( http://www.insecure.org/nmap/ ) at 2008-05-24 16:32 CDT
Warning: OS detection will be MUCH less reliable because we did not find at least 1 open and 1 closed TCP port
Interesting ports on 63-147-82-91.dia.static.qwest.net (184.108.40.206):
PORT STATE SERVICE VERSION
80/tcp open http AkamaiGHost (Akamai's HTTP Acceleration/Mirror service)
443/tcp open ssl/http AkamaiGHost (Akamai's HTTP Acceleration/Mirror service)
History does not long entrust the care of freedom to the weak or the timid.
-- Dwight D. Eisenhower
Test your firewall.
Smell the flowers.