This may be because you are not specifying a port, and Wowza is not bound to port 80 which is default port for rtmpt, so the Flash plugin is automatically doing port rollover, timing out and trying different ports. This is not something the player application you are using is doing, it can do it on purpose, but this is something built-in to the plug-in.
Assuming Wowza is not bound to port 80 you can use one that is bound explicitly. For example:
Using a port explicitly is supposed to prevent Flash plugin from doing port rollover.
Or add port 80 to /conf/VHost.xml /HostPort (first one, at top) /Port, and restart Wowza.