Mike
Thanks for your comments. I used the AIS advice to clear my cache (didn't even know I had one!!) and that seemed to solve the problem.
Something I wonder about with the people who give feedback in a committee (or whatever is used to chat with AIS) is that most will be fairly experienced users so they will have gained knowledge of how to use the system just by repetative trial and error. How about getting an occasional user invited to use the website in front of the 'committee/AIS' to let them see how they get on (only using intuition and the webpage help pages)? That might give a more realistic view of where problems occur. A new PPL, but not a young computer whiz, an older person who uses the 'puter and internet but without really understanding how.
Even allowing for the limited funds and even more limited willingness to spend them, that sort of feedback might emphasise where the most important and often least expensive modifications can be done. EG a few more and relevant help pages.
Cheers, H