i am having the EXACT same problem that sugarcookies was having.. i tried deleting and redownloading limewire, but that didn't work. i also tried searching "gnutella.net" in my computer but nothing came up. heeelllp!

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what? my information?

i'm not even sure what some of these are..
 Your Operating System... windows vista
 Your version of your Gnutella Client i have limewire 4.18.8
 Your Internet connection (56K, Cable, DSL)... cable
 The exact error message, if one pops up... it says "still connecting to the network" and then "detects a firewall" ..it's not a pop up, just the icons at the bottom.
 Any other relevant information that you think may help... i have McAfee Security Center.. i have limewire as an allowed program.

I had the same problem and searched for 'gnu' only, then deleted all of the files that showed and got right into limewire, thanks for the help, hope I can help someone else.