Try this...Check your internet parameters----Look at the time out setting that you have set to log off due to inactivity. Even though you are typing away you are stalled on that particular page. The computer thinks that you have abandoned it and will disconnect your connection due to inactivity even though your are typing madly away. Look at the little icon that look like two computers at the lower part of your screen....If they aren't flashing away then the computer connection is in an idle mode. They flash when active.

To fix it, try this......Right click on your internet connection and left click on "Properties". Next, left click on "Dialing". Look at the time out properties (Idle Enable Disconnect) and increase it as you wish...in my system I have it maxed out at 59 minutes....Of course all of this is for MS Windows. You can also adjust the log off parameters if the connection becomes too slow as compared to the initial connection speed.

Hope this helps---Kevin