Our company has Microsoft Engineers that assist in testing and development which work out of offices on occasion. They have Vista laptops with Intel 2915ABG chipsets. We currently support only B/G. We have a guest WLAN (non-broadcast SSID and open authentication/encryption) but because of latenct issues makes it unusable for them. They are seeing response time in excess of 1000 ms compared to company laptops of 30 ms.
My gut feeling is that there is some sort of driver issue but they state they have the lastest drivers from Intel. Has anyone seen this?