The following is a list compiled from our experiences of applications that may cause an Internet connection to either stay open longer than necessary or continually keep a link open.

1. E-mail checker programs that constantly monitor and get e-mail will cause a link to open on a periodic basis. Depending on the volume of e-mail you can receive or the number of people using such programs links can stay open for long periods.
2. News ticker services.
3. ICQ set in LAN mode will check for messages every 25 - 35 seconds.
4. Yahoo with a stock sticker turned on.