Can't connect limewire since downloaded version 5.4.6
 

Can't connect anylonger - it shows "limewire is connecting"....I have windows XP professional (version 5.1), Java version 1.6.0_18, conected through cable; HD with 23GB available. I've checked the windows firewell and limewire is mark as exception. Any other tips?

hi jcg :) Firstly check If LW 5 Will Not Connect

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If LW 5 Will Not Connect
 

I basically followed all steps you have indicated - it seems that after reinstalling the Java, I've got a connection back.
However going to Advance tools > connections > it sill says that " you are behind a firewall and support firewall transfer.
I've checked windonws firewall and limewire is marked as exception
Do I have to do something else?

Good to hear. :)
After you reboot your computer next time, see if it has same problem.
Make sure only one firewall is active.
If still the firewall issue, please supply details of modem/router brand name & model number as this might be the issue. :)