I've been messing around with Lightdm a bit lately because I only just figured out how to customise the guest session so I've been logging in and out a lot today, that's how I noticed what I'm sure is a bug in lightdm's behaviour
I have a start-up script which sleeps for 30 seconds and then opens pidgin minimized, I kept noticing today that if I log in to my user account, then quickly log out and log in as a guest session (within the 30 secs) then pidgin would start as MY user but on the guest session, so with all of my accounts and contacts available but in the screen of the guest session
I've never noticed this until now, I've been using gdm.
Can anyone confirm this? And if so would this be a lighdm bug?
Not that this pidgin incidence is a huge deal to me but if this is reliably reproduced could lead to serious security risks is some setups