WAP321 limited connectivity

[dennis_sauer]

Hello!  I have an Access Point WAP321, updated to latest firmware 1 0 6 2.  The AP is literally in the same room with the wireless users, yet they frequently get disconnected or receive "Limited Connectivity" message.  I've updated their wireless driver, removed their AVG anti-virus (there was a known issue with it filtering) but it is still not resolved. 

It is at the end of a long Ethernet cable run, but connects at 1000 Mb/s to the switch at the other end. 

Any ideas would be very appreciated. 

[Philip D'Ath]

Have you got it operating in the 5Ghz band?

[dennis_sauer]

The choices were 20Mhz or 20Mhz/40Mhz.  I choose the 20Mhz under "Radio".  Is there another option somewhere?

[dennis_sauer]

I found 5Ghz, but that was for 802.11n only.  I need G and N, so I had 802.11 b/g/n.  There doesn't seem to be an option for 802.11 g/n.