You can also go into your UserCP and change your settings to show the newest posts first.

Settings & Options /Edit Options/Thread Display Mode

Here you can choose the display mode for threads. For a full explanation of the modes, please view this help page -
http://neurotalk.psychcentral.com/fa...thread_display

Thread Display Mode
Linear - Oldest First (this is the default setting)
Linear - Newest First ( this is the one I prefer, less scrolling thru older posts)
Hybrid
Threaded