Do the port test http://www3.limewire.com:6346/ again... if the port test doesn't work then you should see an error (big box) saying that the page could not be displayed. If the test is successful, there'll be writing in the top left corner but it may be hard to see if you only look at the page quickly. I've never seen the page totally blank.

From what I can see your modem doesn't support UPnP. But in LW go tools > options > advanced > listening ports & you'll see whether the button to use UPnP is checked. If not, is the 'manual port forward' button checked?

Different versions of LW run differently on different computers - so sometimes updating or upgrading can cause problems. Very often, deleting LW's preferences folder can be the fix if the problem suddenly happens after upd@ting/upgrading. You can find info about deleting the prefs folder (named LimeWire) here: If LW 5 Will Not Connect
Read the instructions carefully & just remember that if LW's options don't revert to default after deleting the prefs folder & restarting LW, it hasn't been done properly & you'll need to start again

What's the last LW version that you were running without any problems?

The deleting gnutella.net fix is only intended for LW 5.0 (very old version) users. The LW developers had said that it was no longer necessary to delete that file in later LW versions.

Which listening port are you using now?

If nothing above helps then post back & we can give you info about port forwarding for your modem.