Funny, my mrs had an N73 and exactly the same issue. Took it in for repair and they updated the firmware. No change
Tried updating the firmware and was surprised to find a newer version out, which was strange as it had just been into the repair shop. Still No Change.
Nice phone but this fault makes it rubbish, didn't realise it affected others .....
I've just given her my old N95 as I got an N95-8gb, then 8Gb is awesome as it doesn't drain the battery so much when you use some of it's features. Mind you the battery is thicker.
The Light Sabre is class! Worth a download.
Anyone wanting anything for this phone PM me as I have all sorts.
Bri