haha i think i did what you did 2.....i looked at this Theme Thread before i had logged in and thought all the themes were deleted or something;)
They were actually only showing the last days' posts (note: you can change this setting yourself in your user cp to display all threads all the time).
For some reason some settings keep switching over to only shoiwng the previous day's and current threads but think I have that fixed.
But if you change the setting yourself in your usercp this wouldn;t affect you regardless. :)
Let me know though if anyone sees forums flipping back to not displaying threads!