Your levels look fine.
Your best bet is to get in touch with SDL L3Tech (»
SDL L3Tech) here on the forum about your issue. He's a lead tech who visits here twice a week or so on his free time. He's helped several people in the past with their problems.
Before you get in touch with him, here's the info that he will need:
1.) Your current IP address... »www.whatismyip.com/
2.) Your modem's MAC address.
3.) It's best to also run PingPlotter Pro (free trial) to trace your hops for a full 24hr. period. PP can be downloaded here... »www.pingplotter.com/download.html You can then save the file and attach it here or to a PM.