Networks

Could be power fluctuations making it wonky - perhaps something like A/C kicking on causes a slump then a surge in power. (The last bit you mention does not seem to be in line with this as far as I know, however.)

Do you have the latest firmware? You can check on that and other possible solutions here, if you have not done so already:
http://kb.netgear.com/app/products/model/a_id/2615

In the Mode setting, the Wireless Settings menu, change it to 54Mbs, down from the default of "145"Mbs (if it has this higher setting then set it to a lower "54" MBS).

Known Issues

1. WDS link in 11n mode from WNR3500 will fail to connect with WGR614v8 and WPN824v3.
2. If you originally have set your region on your wireless network to Mexico, South America, or United States, upgrading to the v1.0.30WW will set your router to a different region.

If you are still having problems then go here:
http://kb.netgear.com/app/answers/detail/a_id/1219
for a firmware update to correct your issue.

1.
If you cannot connect to the wireless router, check the Internet Protocol
(TCP/IP) properties in the Network Connections section of your Control Panel. It should be set to obtain both IP and DNS server addresses automatically.

2. For Advanced Users Only! If you are using the Microsoft Vista OS, you can elect to use Windows Connect Now to implement WPS (Wi-Fi Protected Setup) and configure the SSID and WPA security password for your router. You will be prompted for your security PIN number which is on the label at the back of your router. This feature is available only if the router is in its default state or if the ?allow a registrar to configure this router? radio box has been checked.

3. If after enabling WPS you need to connect a device that does not include WPS functionality, you will need to first log in to the router and obtain the security key.

4. The Service Set Identifier (SSID) of any wireless adapter, which is the device's wireless network name, must match the SSID you configured in the router. If they do not match, you will not get a wireless connection.

5. Program the wireless adapter of each computer to have the same SSID (Wireless Network Name) as the router.
Check that the wireless adapter on each wireless computer can support the Mode and Security options that you selected. (If you have a question, see the online User Manual or review the settings.

6. Check that the security settings on each wireless device match the security settings of the router. For example, if you selected a Security option requiring a passphrase, then the same passphrase must be used for each wireless computer.
Check that each wireless computer has a wireless link and is able to obtain an IP address by DHCP from the router.

7. For a Windows PC, go to the Control Panel and select Network Connections.
Check the Wireless Connections Properties and ensure that TCP/IP Properties are set to "Obtain an IP address automatically".

8. Make sure the Ethernet cables are securely plugged in.
9. Make sure the network settings of the computer are correct.
10. Check the router status lights to verify correct router operation.

If any errors persists, you might have a hardware problem and should contact technical support.

Hope this is of help to you.