I eventually fixed this on my own. Somehow it was my modem blocking these ports.!!!! All is set and I can connect just fine.

For you people that are with comcast I have found out that they are starting to throttling P2P traffic as of late.Good news, good news, right? Nope, not really. What they're going to do instead is throttle all file transfers for high-usage consumers.

What Tony Warner, Comcast's chief technology officer Told the WSJ (paid subscription required) is that rather than throttle P2P, Comcast will throttle all traffic for those high-usage customers. Of course, as with Comcast bandwidth caps, the exact definition of "high" wasn't elaborated upon.

So, as we move toward more services that require high usage, such as IPTV, Hulu, Netflix's streaming service, iTunes movie rentals, and the like - ISPs are telling us "don't use so much." How can this conundrum be resolved?
Simple, unfortunately. It seems likely that ISPs will begin to move en masse toward the tiered structure that Time-Warner Cable is trying out. The "all-you-can-eat" accounts will - though it will take some time - eventually peter out, if the trend continues

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Fixes For Limewire When LW Isn't Operating As It Should
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LimeWire FAQ and User Guide--If LimeWire Will Not Load
If Limewire Will Not Connect

System Mechanic--FileHippo--Download.com

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Some time's i just want to throw my computer out the window

I had no idea IP's were blocking ports. I don't do much downloading anymore, no time. But today, I had some time...so I went to Drumbeat first and it wouldn't connect, so I went to try LW and it wouldn't connect either

For the past two hours I've been reading post here and troubleshooting LW doing what people say to do in the posts.

One topic suggested downloading Frostbite to see if it didn't at first, then I read in their forum that you need JSE 5.0 so I went to Utility folder and changed JAVA over to JSE 5.0. and it connected.

I tried both LW and DB after changing it and neither one worked. I probed all ports while apps running (LW, DB, FB) all were open but only FrostBite connected. I went to Frostbite and checked the port and changed LW to that port. it wouldn't connect.

All of a sudden at 5pm LW connects with ports 6346 and 12856 the FB port. Drumbeat also able to connect with its orignial port of 6699 hadn't tried any changes to it because I was working on LW issue. Drumbeat has no more Forum for help.

What this tells me is that it is my ISP Road Runner/Time Warner that have set time restrictions on usage. Or there is something else really strange going on that is affecting my PSP software.

Just thought I'd add my findings

Nas

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Drive it ...like you own it.

Mac G3 & eMac Tiger 10.4
LW 4.94 Pro

here we are in uae ,etisalat also blocked Lw , I got this problem since 2 months back

I use a MotoRAZR V3m Cellphone as my modem and Sprint as my ISP. The phone's display and the PC software interface had indicators for my connection state.
Problem:
The phone would go offline yet the PC stayed online?!? I made the error of clicking the stop button and restarting the PC software, upon which time I received a "No Modem Device Installed!".???
Nothing worked: system restart, software remove/re-install, System Restore...
I eventually re-installed the entire OS and softwares. That worked. I got hit twice more before stumbling on an answer. First...,
When the phone goes offline and the PC doesn't, I unplugged the phone from the USB and wait for the disconnect sounds + 3 secs. And I wait for the software to detect the missing device. Then I plug the phone in and the software re-intializes automatically. I usually have to do this once per internet logon session.
Second...,
A tip from the forum; I connect manually in Limewire after it finishes loading.
And something I discovered; Most ISP's look for a browser signature. I open IExplorer goto Google, minimize it, and then continue w/ Limewire.

Hello,

I have had limewire for a very long time (Pro) and have had successful connections to the "Turbo-Charged" status after mere seconds until these past two weeks. I thought maybe it was an expired Pro membership, so I upgraded last night and still am unable to connect at home or at work.

Here are my stats:

Max OsX 10.5.3 (Leopard) - (I have had Leopard for over 6 months and have had successful connections with it.)
LimewirePro 4.18.2
Home connection: wireless router/BellSouth DSL
Work connection: unknown (but i work at a large hospital so it's got to be something relatively huge and good. I have been able to connect from both home and work.)

I have the "Firewall" icon at the bottom left corner and the one bar with "Starting Connection" that just stays stuck there.

I've tried testing the ports and when I test 6346 it says closed... I have changed and added so many things in my attempts to figure this out that I just now clicked "Restore defaults" in the Limewire Preferences > Advanced > Firewall settings. So, that's where I am... if anyone can talk me out of this chaos, I will be forever grateful.

Thanks,

Paula

This has also happened to me in the last few weeks after no problems ever, im using BT Broadband and it just stays on 'currently connecting'

Thought I was going nuts for a minute!!! Working one minute, and not the next!! Knew it was the ISP! Changed ports, now all is well!!