I switched my laptop to ext3 a couple of weeks ago, mainly because it can be done on the fly. Also you can mount it as either ext2 or ext3, which is really nice if you only have an ext2 rescue disk. I'm running it with a 2.4.9 kernel and I haven't had any problems yet. I'd say that is the way to go for anyone wanting to switch to a journaled filesystem without the hassle of redoing your filesystem.
http://www.uow.edu.au/~andrewm/linux/ext3/

I'm also running ext3 and Reiser on my desktop at home. I wonder what the most JFS's somebody is running on a single system is... sounds like a web poll to me:
http://www.mn-linux.org/sympoll/polllist.php3?mypollid=16

Brian [lxy at cloudnet.com] wrote:
> I'm in the process of re-arranging my disk partitons and I want to start
> moving stuff to a journaling file system.  I realize I'm starting a holy
> war here, but I'm pretty well sold on ReiserFS.  Are there any real
> advantages to using a different FS (xfs, jfs, ext3, etc)?  The only reason
> I'm moving to a journaling file system is because ext2 sucks.
> 
> -Brian
> 
> 
> 
> 
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