Hi there mate, and thanks for the kind words

This was happening before the site upgrade, and I ran CCleaner and cleared private data in FF.

I suspect that this instance of FF had become corrupted in some way, as it had become a real memory hog as well (much more than usual).

I ran Memtest and checked the HDD with no problems reported, so I am reasonably happy now.

I only posted this because I have never seen anything not accept the full length password that it was set up with............. corrupted password not working, yes, but not actually truncating the input. It was quite a while before I noticed what was happening, so I thought that I would mention it in case anyone else comes across a similar problem with password acceptance.