JFS filesystem and Constant Disk Access

[nomind]

Hello,

I recently reformatted my Gentoo partition from ext3 into a JFS one, just to see how well the latter compares to the tried & true Linux fs. I've used the 'noatime,sync' options with the JFS, which now contains a fresh Ubuntu 5.10 install (I don't think this matters though, please read on). However, I notice that the disk-access red light on my case is constantly on, even when I'm away from the computer. I've checked the processes and nothing IO intensive seems to be going on. Mind you, this is not the chipmunks-in-a-hard-drive "Grrr...Grrr...Grrr" type of access, reminiscent of Windows and "emerge -s". It's rather inaudible, yet something seems to be accessing the HD non-stop.
Has anybody else experienced this with JFS (or any other types of fs)? If so, what can I do to stop it?

Thanks

[Cintra]

I have a copy of Gentoo on my hdb2 partition and don't see the problems you mention.
My fstab entry on that partition is

[nomind]

Thanks a million!