Was virtually non-functinal earlier. Now OK. I agree with Chald - almost certainly 'cos system is being upgraded/changed. Use the time to get some sun!
Thanks, DDDD and Chald. I'll give it another go. Got stuck with the Crossword Clue Solver and a blank page a minute ago, then the bit I wanted got covered up by some American airline advertisement. Been there, don't want to go back.