Connecting an Android G1 phone by wifi was able to make my Bigor 2800VG lock up completely. The good news is that the Beta firwmare aimed at giving more stable Wifi to Mac Clients - F/W 2.8.2.1 seems to cure the problem completely.
Hope this is useful to anyone else playing with an android phone over WiFi.
John

I can't even get my Android G1 phone to see the SSID on my 2820Vn. SSID hiding is not enabled. Security is set to Mixed(WPA+WPA2)/PSK. Any ideas?

I have never liked the combination security modes. If there is a compatibility problem then this is likely to provoke it. From a security point of view, you are allowing entry by weakest - wpa, so negating the advantage of wpa2.

Try with no security and then with wep, and finally wpa.

Good luck