Have a wireless network using a Linksys SRX400 router, firmware updated. Router is connected to T-1 1.5 line. All PC's and laptops are connecting wirelessly, nothing on the wired ports. (Unable to go wired for many reasons) As I was adding PC's, some users began losing connection. The problem did not stay with the same users as each day went by. I tested a therory where I powered down one PC and another PC that was on would find the router and connect. In the DHCP client list shows 14 users connected although a couple of times it did issue more than 14 IP's in one day. DHCP is set for 30 users, although I have changed this to 40 and 50 in hopes of fixing. Adjusted preamble, all PC's running WinXPSP2. Almost all PC's have Linksys WMP54GX PCI cards. One using USB and two laptops using internal wireless cards. No file sharing or other connections occuring. Only connected to router for Internet access. Linksys support is not coming up with any solutions. Need about 20 users able to share Internet connection. Any clues as to what's going on and how to solve?