Have you done a battery pull? or a soft reset? Neither affects your data but can clear annoyances.
Thank you for your response. Yes I had already tried a battery pull and a soft reset. I haven't tried a Factory data reset, I did think about doing one and then reinstalling version 2.2, build FROYO.BUJP7 but Samsung Kies will not allow me to reinstall firmware unless the version you are installing is later than the one already installed on the mobile.
Here's a few more bits of information:
1) The Wi-Fi symbol, normally displayed at the top of the screen, never appears when Wi-Fi is "switched-on", implying that it isn't actually switching on.
2) Bluetooth works fine, possibly implying that the radio section is still functioning; often the same module handles both Wi-Fi and Bluetooth transmissions.
3) The Wi-Fi MAC address is shown as "Unavailable" in Settings -> About phone -> Status, this might be normal, however, as the Bluetooth address is also shown as "unavailable" until a Bluetooth pairing is actually made.
4) Using *#1234# to check firmware versions I have:
PDA: BUJP7 2.2
Phone: BUJP5 2.1 Vodafone Supplier firmware
CSC: GVODJP7 version not known.
Anyone know if this is a compatible ROM set i.e. can 2.1 and 2.2 be mixed?
Anymore suggestions would be greatly appreciated.Alan T