HELP: Certain forum sections are stuck on 3 days ago!

all the forum sections will only seem to update after every, hour or so and the Artists & Bands section (the one i most use.) is stuck on 3 days ago!
so the only way i can actually get onto new posts in the A&B section is through the last post section on the index. :/

help?

edit. here's a example pic:


^ all these are from the 5th of Sept.