Wrt110 loss of wired network when powered on

Hi there,
Don't think I've seen this problem in any other forum.
My wrt110 firmware .05 has been working fine until now. I have a couple of phones, 2 printers, 3 laptops and a wii happily connecting to it. However now when I power on the wireless device, nothing can connect wirelessly. Wired connection is fine, but my wireless network disappears. No device can find the network, although it is there and set up on the admin pages. I pull the power chord out for 30 seconds and try again to get it going again, a bit like trying to start a car. Everntually devices find the network.
On two occasions it has forgotten the wireless settings and restored an open 'linksys' network. It's really infuriating becuase whilst I restore the SSID and use the same key, not all the devices actually recognise it and have to be reconfigured on the devices.
What's going on you reckon? Hardware?

Hello all, thank you for your responses.
Sabretooth, in terms of a reset, I am pulling out the power plug from the back of the device and putting it back in. Using the reset button doesn't seem to have the same effect. When I pull the plug and reintroduce it, most of the time devices then find the Wireless network.
I power on at the wall, the router flashes normally and happily, except nothing can connect. The main pc is still powered off. I have to pull the plug and reintroduce it, then test a device to see if it can connect. If it can't I try again until it can. Eventually I can connect and the devices by and large stay connected until I next power down at the wall. I can 100% reproduce the problem when I power on at the wall.
On the 2 occasions I've been left with a 'linksys' network, I have been able to happily redo the wireless settings as you've stated scrooge.
I am already connected through a surge protector. I was going to update the firmware but I read people are having issues with .07 and so I am loathed to upgrade until I understand a bit more as to why this is happening.

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    Thank You.
    Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
    Click the “Kudos Thumbs Up" on the right to say “Thanks” for helping!
    Gemini02
    I work on behalf of HP

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    Please mark the post that solves your issue as "Accept as Solution".
    If my answer was helpful click the “Thumbs Up" on the left to say “Thanks”!
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