Did the static IP setup go ok? If the other computer's port forwarded, you'll have to have a different static IP than the other one has.

Did you make sure that your port forwarded within the router was the same as LW's listening port & the port in the 'manual port forward' field within LW's firewall config? All those port numbers have to be the same.

Is your listening port different to the listening port of the other computer? Don't use the same port number for both. Try using port 64049 & see what happens.

i cant set up static ip because i hav to pay for that privelige to my isp. I have set all the ports to the same number on port forwarding and still no luck, i've checked that im not using the same port number as the other guys on the router and still absolutely no luck.
Thanks alot for all ur help guys but it really looks like we're running out of ideas cos nothing is working, does anyone have any other suggestions other than the ones i have already tried. Thanks

You don't have to get your ISP to organise a static IP for you (AFAIK it's expensive to do that). You can set up a static IP on your computer that your router will recognise. All you need is some info about default gateway, DNS servers etc...have you tried the instructions here?
http://www.portforward.com/networking/staticip.htm

I have a static IP set up for my port forwarding...my normal IP address still changes as it usually would. The static IP is just for port forwarding purposes. If you don't see DNS info, your ISP will be able to give you that. You don't have to say anything about static IPs etc, just ask for your DNS server info. Without a static IP port forwarding won't work for your router.

i've followed the instructions and set up the static ip, and still absolutely no luck. Its so frustrating because bittorrent and ares are connecting fine most of the time, its only limewire that isnt working, i've absolutely run out of ideas.......

that makes me sick! yesterday, i had no problem with limewire, everything was fine. now i m spending my time registiring forums to find solution for my connection problem. i have read and done everything but there is no progress. i also can not connect to the community chat. here are answers for your questions:
1. OS version? (eg: Windows 98) windows xp
2. What firewalls you have? Modem firewall, Windows firewall (disabled for limewire), Windows defender
3. How much ram? 512 mb
4. Hard Disk space available? 19/60 gb
5. Connection type? (eg: dialup, broadband, cable, etc.) broadband wireless
6. Modem & router brand name & model numbers? Siemens speedstream 6520
7. Where are you trying to connect from (house, appartment complex, school, student accomodation, work, etc.)? apartment complex
8. What version of LimeWire (LW) & Java do you have? (Go to LW's menu Help>About LW...) Will show both LW & Java version. Limewire 4.14.10, Java 1.6.0_03
9. Who is your ISP (Internet Service Provider)? ttnet
10. Do this simple test for us. Using your browser go here: http://www3.limewire.com:6346/ The page should say 'Your test worked!'. What happens when you go there? it didn’t work
11. Are you sharing the connection with other computers or p2p sharing programs? If yes, please give details of set up. no
12. Is this a your 1st try at LW or is this a new problem with an experienced user. experienced
13. Do you see a brick wall in front of the blue world icon at the bottom of LW's interface? _ click here to see Sample image yes
14. For those using a modem/router, how is your modem/router set up...are you port forwarding or is UPnP enabled? UPnP enabled
15. What security programs are you using (antivirus etc)? Some people might not be aware that their security suite includes a firewall spyware doctor, it includes onguard protection
16. What country are you living in? Sometimes there are ISPs with the same name in more than one country (eg Clearwire in the USA & also in Ireland). Turkey