Yeah sorry, just that sometimes preferences do strange things. Let us know how things go with your ISP.

yeah I have one other PC at my house with limewire and it stopped connecting too. I havent tried messing with the settings on that one at all yet. Also I know of one other friend of mine who has Atlantic and he was unable to connect either last time i checked.

Found this on Google, as I said before it's about shaping rather than blocking but maybe things have changed in the last few months. This is from March this year:
http://www.atlanticbb-sucks.com/

It's definitely worth calling them & finding out if they've started blocking. If you could post what they say back here, it will help out other Atlantic users who are having problems!

I called Atlantic and they told me that they are not blocking but they are definately limiting p2p sharing on their network because it was slowing down their service. I asked if that would prevent me from being able to connect to p2p networks and he told me that it may or may not depending on what times of the day I am online. I still do not know if this is the reason why I cannot connect or if it is something else.