Seems Comcast thinks that they can interfere with your web usage on their network.  Apparently, if you have Comcast, you no longer are paying to use the bandwidth as you want - Comcast has determined various applications and services just aren't allowed.  Things like peer-to-peer file sharing, other VOIP providers, Lotus email and FTP.

So, if you have Comcast and you've been noticing things not working right, it isn't your computer - nor your browser (for once!) - it is your ISP meddling in what you are allowed to do.  Most likely they have a government mandated monopoly where you're at too, so you can't move to an ISP interested in just giving you service.  If you have Comcast, make sure you let them know you do not appreciate their business practice and, if you can, leave.

Comcast violates net neutrality with this move and if those with Comcast don't make it an expensive business decision, other ISPs may feel emboldened to do the same.  If they are taking an inch and not stopped, they will eventually make sure the only Internet service we get will be through their mutual business partners...