IMac 24" loses WLAN connection again and again

Hy everybody,
I bought a brand new intel-based iMac 24" and I'm very pleased with it. I just have one Problem that i can't resolve. I have a WPNT834 (Netgear) WLAN Router using WPA2. The iMac can connect without problems, speed is very good and the signal strenght is perfect, but from time to time my computer loses it's WLAN connection.
If this happens it doesn't reconnect. I have to disable Airport, wait a minute and enable it again.
Can anybody tell my why this happens? I mean, that the connection get lost is not so tragic, but that it doesn't reconnect is bothering me.
Thanks in advance and regards.
Tobi
iMac 24" Mac OS X (10.4.9)

When you click on your Airport Status do you see more then one access point? Neighbors?
You can try changing the wireless channel on your router. That might help with the drop of connections. It's possible that another wireless access point in the area is on the same channel and causing a problem.
Hope that helps a little,
AL

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IMac 24" loses WLAN connection again and again

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