Have you tried:
– deactivating all plugins to see if this resolves the problem? If this works, re-activate the plugins one by one until you find the problematic plugin(s).
– switching to the default theme to rule out any theme-specific problems?
Is there a reason why you’re running WordPress 2.7.1? It’s generally a good idea to keep your WordPress installation up to date. Security is typically always improved in newer versions, and you may find yourself having trouble with plugins when you run an outdated version of WordPress.
Thank you Esmi,
It was the Widget Logic plug-in that I uploaded to alter the widgets that I have on each page. What a relief!
Will also update to 2.9.2.
Thanks all!