Keep alive http thread for a long time

[javarako]

Why some threads keep alive for a long time even thought the configuration is set connectionTimeout="60000" maxKeepAliveRequests="1".
This causes the maximum threads are reached and then JBoss is very slow.

I captured Tomcat Status in JBoss 3.2.7.

http-0.0.0.0-8788
Max threads: 300 Min spare threads: 25 Max spare threads: 75 Current thread count: 25 Current thread busy: 3
Max processing time: 2360984 ms Processing time: 21040 s Request count: 998 Error count: 104 Bytes received: 0.03 MB Bytes sent: 150.43 MB

Stage Time B Sent B Recv Client VHost Request
S 0 ms 0 KB 0 KB 127.0.0.1 =================== GET /status HTTP/1.1
R ? ? ? ? ? ?
R ? ? ? ? ? ?
R ? ? ? ? ? ?
R ? ? ? ? ? ?
S 339628625 ms 61 KB 0 KB xxx.xxx.xxx.xxx ====================== POST /company-name/control/weekly?profileName=Engineering HTTP/1.1


Here is my configuration in jboss-3.2.7\server\aProject\deploy\jbossweb-tomcat50.sar\server.xml

[javarako]

Connector port="8788" address="${jboss.bind.address}"
maxThreads="300" minSpareThreads="25" maxSpareThreads="75"
enableLookups="true" redirectPort="8443" acceptCount="100"
connectionTimeout="60000" disableUploadTimeout="true" maxKeepAliveRequests="1"
proxyName="availability.cingular.net" proxyPort="8080"