hi lime wire has been connecting fine until today i tried but seems to find host but will not stay connected to them can anyone help

Are you just not connecting to hosts, or is LW losing it's connection totally?

Do your files start off connecting, then go to 'need more sources'? If that's the problem, sounds like fake files. Search again, vary your search terms (for music, look for artist or album rather than song title) & try the All Types search. Stay away from files with heaps of sources, go for a file with 10 sources or less, or a modem source. Check out the links below for some more info.
Info about fake files
How to find music

For movies, look up a file with Bitzi before download. You'll see other users' opinions of the file. Files with lots of sources but no Bitzi rating are likely to be fakes.
How to use Bitzi

If no files at all are connecting & you're convinced they're not fakes, you could try deleting LW's preferences folder when LW's closed. See points 2 & 3 below for instructions
Fixes for LimeWire

when you look under the connection tab you can see LW looking for host but cannot connect to them and some times it does but only for a couple of seconds

Sorry about that, I read your first post completely wrong

So are you seeing any green connection bars, or it it just 'starting connection'? Do you see the firewall icon (brick wall in front of the blue globe)? What's changed since you could connect (hardware, ISP plan, new software, updated software etc)?

Read through this thread, it has a lot of info. Make sure your firewall's still configured properly. Do the port test & see if it works.
Connection problems? Check here first!

If you don't find any help there, post back with your details. Post #2 of that thread tells you the info that we need.

nothing has changed, Yes i see 5 green bars, Yes i do see the brick wall but i have always seen if even when LW was working fine. Did that port test before post and that was okay.

1. OS version? windows xp servicepack 2
2. What firewalls you have? Nortons internet security
3. How much ram? 512
4. Hard Disk space available? 6G
5. Connection type? (eg: dialup, broadband, cable, etc.) Broadband
6. Modem & router brand name & model numbers? smc barricade plus 7004fw
7. Where are you trying to connect from (home, school, work, etc.)? Home
8. What version of LimeWire (LW) & Java do you have? (Go to LW's menu Help>About LW...) Will show both LW & Java version. 4.12.6 java 1.5.0_07
9. Who is your ISP provider (Internet Service Provider)? wirefree
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? Test worked
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 FW or is this a new problem with an experienced user. New problem experienced user
13. Do you see a brick wall in front of the blue world icon at the bottom of FW's interface? yes

i have noticed after whatching some times there is onyl one geen bar or none

Does the connection drop off randomly, or only when you're downloading?

I am currently trying to download a tv program

have canceled my downloads and is still doing it.

I'm not sure how reliable its UPnP is for that brand, or whether you actually enabled it. Did you enable it? If not, you may need to forward a port. See Port Forwarding for the SMC 7004FW. Most important step is the 1st which is setting up a static ip. Port forwarding is usually more reliable than UPnP. If your computer is stressed or LW is stressed then it can momentarily lose communication with the device & thus the port closes which is one of the drawbacks with UPnP. Not to mention some brands don't use regular UPnP specifications & thus is unreliable. That's why port forwarding is safer. It's usually also best to do one port forward for UDP & a separate one for TCP.

Otherwise Steps to Enable UPnP for SMC Barricade Plus SMC7004FW