Finally. In the next minor update of jagwyre, 10.2.2, testcode for the journaling filesystem will be included.
About time. While linux users can already use reiserfs, extfs3, xfs etc. for almost two years now, mac users where left in the dark.

<div align=center> reiserfs <font =-2>image from</font> </div>

The picture above shows the new option in the disk utility. Be warned however,according to beta testers the new filesystem is about 10 to 15 procent slower dan HFS+. But we can expect that this will change soon.
Dominic Giampaolo, the designer of the much acclaimed beOS filesystem is working for apple since march 2002 as file system engineer,this promises some good!
More information can be found here.