I am trying to connect a new Acer Veriton L460 with builtin wireless to an existing network. At the customer site it "falls off" the network constantly - says the connection is good but poor or no connectivity - usually cannot even ping the router after about 15 seconds. In my home office it connects and stays connected. However, downloads from the internet are exceptionally slow and usually fail. I can access normal HTML pages without problems. If I download files to another computer, transferring them to this computer is painless and fast.
XP Professional with all updates.. I've re-installed the NIC driver and tried 3 routers at the site.