Don't run the Windows & McAfee firewalls together, two software firewalls will interfere with each other. Choose one, configure it to allow LW & disable the other one.

Has this just started happening since you upgraded to LW Pro?? First thing to try deleting LW's preferences folder when LW's properly closed. See point 3 here & also point 2 (there could be a folder in either location).
Fixes for LimeWire
This will kill all of your settings within options, you'll have to go back through afterwards & reset things. If you're not sure of your settings, go through LW's tools > options & write them all down, so that you can reset things later.
http://www.gnutellaforums.com/genera...der-vista.html


These threads might also help.
“No Compromise” Vista-McAfee-Limewire Solution
Can't Connect With VISTA!

This thread has advice for McAfee users and a link to download the Beta version of McAfee. Since your connection isn't dropping, it might not be applicable to you but here it is anyway
Vista + McAfee 2007 + LimeWire = dropping connection

If nothing there helps, please post back with your system details.
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