Cannot reproduce Last Post

[Mert]

I noticed that last post column doesn't show the latest post all the time. Both on Forumhome and Forumdisplay pages the last post is not correctly updated. Both shows another user as last poster however the latest comment was from me. Attached screenshots

Forumhome Latest Post ( check the latest thread OMG I'm soooo hot..... )

Forumdisplay Latest Post

 

[Cezz]

Testing. Working as expected for me ATM :S

 

[Mike]

I can see it happening for that thread, but I'm baffled as to why.