Hi, wiltldnrUSA and Beavergong – Two thoughts on this: 1) Once I’ve entered my User name and password to log-in (using my iPad2) it takes quite a while to ‘get through the process’. First, I’m taken to one page, headed ‘Log In’ in red, with the statement ‘You have successfully logged in’ below in green. But then I have to wait a few seconds, to be automatically re-directed to the actual start page, headed ‘The Official Fast Diet Forums’ in red. Then I usually click on the ‘recent comments’ – but now I double-check that I am actually shown as logged-in (by looking for the ‘Welcome, Jeanius! Log out?’ At the top-right of the page).
It occurs to me that, before I realised I was having log-in problems, once or twice, I just MIGHT have clicked onto a topic I wanted to comment on fractionally too soon, i.e. before this two-pages redirection process had fully registered my log-in.
2) Quite often, when I’m sure I am logged-in, I will start to compose a reply to someone’s posting but then will go off – by opening a new tab or page or whatever else the right technical term is for the manoeuvre – to research a subject or find a link to a website that I want to quote. I wonder whether my log-in gets ‘timed out’ if I’m away from the Fast Diet Forum site for too long, but without there being any obvious indication/warning that this has happened?
When I remember – which, annoyingly, is not always – I do now ‘copy’ all my composed text before I try to submit it, just in case my post gets lost. Then I can just start the log-in procedure all over again and ‘paste’ my comment again, once I’ve navigated back to the right thread.
I wonder whether these two possibilities might also relate to your own use of the site?
So, it might be User Error – surprise, surprise – or it still might be some kind of on-site glitch, perhaps.

I think it might be holiday time (Hooray!) for the site’s usually very responsive technical advisor, fastdiet, so we might need to find our own ‘safe measures’ to guard against this issue at present.
If my hypothesis 2) is correct, I would like to see some kind of ‘You have been timed-out. Please log-in again to continue.’ warning-notice added, if that is technically possible. Happy posting and all best wishes.