Last time I rebooted I selected Fluxbox as my session; entered my username; entered my password and hit enter. Tried this multiple times but kept getting thrown back to the login screen so I eventually dropped to TTY1 and logged in from there, then issued startx.
Any idea what that's about, or where should start to troubleshoot it?

Try to reinstall video drivers with
========= SCRAPER REMOVED AN EMBEDDED LINK HERE ===========
url was:"http://smxi.org/site/install.htm"
linktext was:"smxi"
====================================
.

A few days ago i started to use my autologin script instead of a display manager. When the script crashed during beta testing with an unhandled error, it caused an automatic logout. Last year I had video driver issues: lightdm showed up, but X crashed when I tried to login to any desktop, and the login screen appeared again and again. It was solved with smxi.

Well I was using the proprietary NVIDIA driver"Card: NVIDIA C79 [GeForce 9400] X.Org: 1.12.4 driver: nvidia Resolution: 1600x900@60.0hz GLX Renderer: GeForce 9400/integrated/SSE2 GLX Version: 3.3.0 NVIDIA 325.15"
at the time. The issue is either intermitent or it has resolved itself
o/.