mod_proxy on Windows - keeps creating new connections

I'm trying to use ProxyPass on Apache (2.2.6) on Windows (XP and 2003)
redirecting to Tomcat. Apache keeps closing sockets and creating new
ones under heavy load (many sockets are in TIME_WAIT state when
checking with netstat). Here is the configuration I currently have:

ProxyPass /command http://localhost:8080/mywebapp min=40 max=40
keepalive=On

Apache's memory keeps growing as well (using "MaxRequestsPerChild
1000" to prevent it from growing indefinitely).

Any idea?