Have you noticed a relationship between the disconnection and your cordless phone ringing or being used nearby? Are your neighbors close enough (like on the other side of a wall) and have cordless phones?
We had this issue and had to replace our cordless phones; once we did that everything was perfect. We have a desktop, several laptops, a printer and even our Wii use it.
A little more information from
http://www.anetforums.com/posts.aspx?ThreadIndex=29876 -
Symptom(s):
Interference from 2.4 GHz cordless telephones. The interference can be experienced by connection disconnects, pauses or disruptions in data transmissions, or other erratic connection behaviors when the 2.4 GHz cordless telephone is powered on or in use.
Cause:
2.4 GHz cordless telephones operate at the same frequencies as 2.4 GHz 802.11b and 802.11g wireless LAN access points, network adapters, and other devices.
Solution:
* Change the location of the Access Point and/or the base of the cordless phone.
* Switch the channel on the Access Point. If that doesn't work, try another channel.
Note: Many 2.4 GHz cordless telephones operate with what is called frequency hopping technology. This technology utilizes the entire frequency range also used by 802.11b and 802.11g wireless devices. Thus changing the channel of the Access Point may not eliminate the interference problem.
* Operate the phone with the antenna lowered, if that is an option.
* If all else fails, use a 900 MHz phone instead of a 2.4 GHz phone.