ragtek Thread Reader / who has read the thread

The thread_read is part of the XF Daily Clean Up cron entry I think. Not really a good idea to disable it. You'll probably just have to set your "Read Marking Data Lifetime (Days)" (Home -> Options -> Threads, Discussions and Conversations) to a much higher number than the default of 30. Assuming you set it to 365, one year later your thread_read data that is older than one year would still be wiped so you'd need to set it to something monstrously high. This is probably not a good idea for big boards though.

Did this ever get updated? I just downloaded the file and it still says RC1.

Yes: http://ragtek.org/xenforo/threads/ragtek-thread-reader.49/ but because there is now an other version of this add-on available, i thought that i don't need to invest my time in this add-on anymore^^

I see. I installed yours because you mentioned it had less overhead

Are you referring to: http://xenforo.com/community/threads/who-has-read-a-thread.14909/

If so, would you recommend those with your add-on to uninstall and move over to that add-on?

Nevermind, i've released my version also here => http://xenforo.com/community/threads/ragtek-thread-reader-who-has-read-the-thread.11147/

*installs*

Doesn't work in xf 1.1.2