Version:           kdelibs-3.5.6-4.fc6 (using KDE KDE 3.5.6)
Installed from:    Fedora RPMs
OS:                Linux

I have been experiencing the following behavior for about two months:
eject a cd, place another (or same cd) in tray and close; CPU load jumps to ~100% with kded consuming most; dialog box opens "Mounting /dev/hda", progress remains at 0%, eventually dialog disappears; CPU load remains at ~100%, CPU temperature climbs, must kill kded manually; cd does in fact mount auto-magically; the "Storage Media" dialog does not appear to ask what to do ("Open in new window", "Do nothing", "Cancel", etc.).

NOTE: I use knemo, which I saw mentioned when researching this bug.  knemo disappears when kded is killed.

I tried playing with /etc/fstab, here is mine (at the moment, after several hacks), last line is cd/dvd-rw:
/dev/VolGroup00/LogVol00	/	ext3	defaults	1 1
LABEL=/boot	/boot	ext3	defaults	1 2
devpts	/dev/pts	devpts	gid=5,mode=620	0 0
tmpfs	/dev/shm	tmpfs	defaults	0 0
proc	/proc	proc	defaults	0 0
sysfs	/sys	sysfs	defaults	0 0
/dev/VolGroup00/LogVol01	swap	swap	defaults	0 0
/dev/sda1	/mnt/c_drive	ntfs-3g	rw,defaults,umask=022	0 0
/dev/hda	/media/disk	auto	exec,noauto,rw,users	0 1

uname -a Linux presario.localdomain 2.6.20-1.2948.fc6 #1 SMP Fri Apr 27 19:48:40 EDT 2007 i686 athlon i386 GNU/Linux
Compaq Presario SR2020NX, AMD 64 3500+ (~2.2GHz), nvidia GeForce 6150 LE, LightScribe Double/Dual Layer 16x max DVD±R/RW drive, HDD SATA sda & sdb.