Would it be possible to try to connect when nobody else in your block might be connected (whenever that might be. Perhaps when they're all in class or something.) I'm wondering if their use of the same port is causing issues. Did you try a different port number?

You can try a proxy, but they are apparently time consuming to find a proxy that works. All those proxy links are from user-feedback. I personally have no experience with them.

And if you have changed settings within LW, you "will" have LW preferences somewhere on your computer. The LW 4.10 prefs folder is called limewire not .limewire as with the previous versions. And although limewire prefs are not invisible, the parent folder is hidden; Application Data. But you should search it whilst LW is closed & whilst you have set explorer to show hidden files & folders. Remember when the search results come in for limewire, it will show at the top the location when you select each limewire listing. The location should be C:\Documents and Settings\*yourusername*\Application Data\limewire