We had a situation where sessions were being re-started immediately after logging in to a CakePHP app over SSL. It was pretty much as described here:
http://stackoverflow.com/questions/308659/session-not-saving-when-moving-from-ssl-to-non-ssl
and the original author's suggestion fixed the issue (although we'll try to implement something using a custom session config in CakePHP).
The weird thing is the site in question has been live for some months, and this issue only just seems to have arisen. It doesn't seem (I could be wrong about that) that it's even happened after an update.
This may well be wild clutching at straws, but do any of you clever people have any thoughts as to what might have caused the change in behaviour?!
Thanks,
Toby