ronnycopeh,

Make sure that the Comodo firewall's still allowing LW access.
PortForward.com - Free Help Setting up Your Router or Firewall

Delete LW's preferences folder when LW's properly closed. See point 3 here & also point 2 if you've used older versions of LW in the past (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.

What version of Java are you using? Some people have had trouble with the latest Java updates (1.6.0_01 & _02). Try this version instead. Download the JRE offline installer & remove any other versions of Java before you install this one.
Archive: Download Java 2 Platform Standard Edition (J2SE) 5.0 Update 11

If you're still stuck, please give us a few more details
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Nathaniel,

If you've got a problem...tell us what it is