Re: session immediately timing out for some users
The point of appending the unique ID is that it is different for every
single request. The CFID and CFTOKEN are going to be the same for all
the requests from a given user for a given session. By making the URL
different every time a cache system will say this is a different page
then any saved pages it has and thus return a fresh page from your server.
Some personal firewall/anti-spam/anti-popup type software can be
unfriendly to cookies as well. Requiring users to explicitly accept
cookies from any given website otherwise the software blocks the cookies.