akangaro

Success. Thanks for your advice.

Thanks Matt. I had looked at the plugins and nothing looked suspicious. I will try switching them off one by one.
Cheers

Thank you Courtney – I had exactly this problem and your solution was perfect.
Bill

I had tried that. No worries – I will think about this later – other things to do for now. I appreciate your help, thanks very much.
Bill

Twenty Eleven – OK, thanks, I will have a look around for something that will support.
Anything you know supports this?