openSUSE 11.3
KDE 4.6
Every time I change into my Music folder, I get heavy IO on my disk, causing Dolphin and Desktop not to respond until Dolphin crashes.
In .xsession-errors I get
klauncher(4978)/kio (KLauncher): SlavePool: No communication with slave.

dolphin(1928)/kdecore (KConfigSkeleton) KCoreConfigSkeleton::writeConfig:
dolphin(1928)/kdecore (KConfigSkeleton) KCoreConfigSkeleton::writeConfig:
dolphin(1928)/kdecore (KConfigSkeleton) KCoreConfigSkeleton::writeConfig:
dolphin(1928)/kdecore (KConfigSkeleton) KCoreConfigSkeleton::writeConfig:
dolphin(1928)/kdecore (KConfigSkeleton) KCoreConfigSkeleton::writeConfig:
dolphin(1928)/kdecore (KConfigSkeleton) KCoreConfigSkeleton::writeConfig:
dolphin(1928)/kdecore (KConfigSkeleton) KCoreConfigSkeleton::writeConfig:
dolphin(1928)/kdecore (KConfigSkeleton) KCoreConfigSkeleton::writeConfig:
plasma-desktop(5007)/plasma StatusNotifierItemSource::refreshCallback: DBusMenu disabled for this application
KCrash: Application 'dolphin' crashing...
KCrash: Attempting to start /usr/lib64/kde4/libexec/drkonqi from kdeinit
QSocketNotifier: Invalid socket 13 and type 'Read', disabling...

Starting from konsole I get:
ds@morpheus:~> dolphin /media/Mucke
dolphin(3081)/kdecore (KSycoca): Trying to open ksycoca from "/var/tmp/kdecache-ds/ksycoca4"
ds@morpheus:~> dolphin(3081)/kdecore (KConfigSkeleton) KCoreConfigSkeleton::writeConfig:
QPixmap::scaled: Pixmap is a null pixmap
QPixmap::scaled: Pixmap is a null pixmap
KCrash: Application 'dolphin' crashing...
KCrash: Attempting to start /usr/lib64/kde4/libexec/drkonqi from kdeinit
sock_file=/home/ds/.kde4/socket-morpheus/kdeinit4__0
QSocketNotifier: Invalid socket 13 and type 'Read', disabling...

EDIT: Seems dolphin crashes on accessing external drives, like USB HDDs

m0nk

During the time of high load, try checking using iotop/htop in Konsole which processes are using the systems resources.

Looks like R.I.P. of my HDD, I guess. Strange enough, because dolphin crashes during the attempt to access external /dev/sdb
See syslog:

Feb 7 20:43:52 morpheus kernel: [ 2628.817169] ata1.00: configured for UDMA/100
Feb 7 20:43:52 morpheus kernel: [ 2628.817177] ata1: EH complete
Feb 7 20:43:59 morpheus kernel: [ 2635.149222] ata1.00: exception Emask 0x0 SAct 0x1 SErr 0x0 action 0x0
Feb 7 20:43:59 morpheus kernel: [ 2635.149225] ata1.00: irq_stat 0x40000008
Feb 7 20:43:59 morpheus kernel: [ 2635.149231] ata1.00: cmd 60/08:00:c0:3a:47/00:00:01:00:00/40 tag 0 ncq 4096 in
Feb 7 20:43:59 morpheus kernel: [ 2635.149232] res 41/40:08:c2:3a:47/00:00:01:00:00/61 Emask 0x409 (media error) <F>
Feb 7 20:43:59 morpheus kernel: [ 2635.151217] ata1.00: configured for UDMA/100
Feb 7 20:43:59 morpheus kernel: [ 2635.151237] sd 0:0:0:0: [sda] Unhandled sense code
Feb 7 20:43:59 morpheus kernel: [ 2635.151241] sd 0:0:0:0: [sda] Result: hostbyte=0x00 driverbyte=0x08
Feb 7 20:43:59 morpheus kernel: [ 2635.151248] sd 0:0:0:0: [sda] Sense Key : 0x3 [current] [descriptor]
Feb 7 20:43:59 morpheus kernel: [ 2635.151256] Descriptor sense data with sense descriptors (in hex):
Feb 7 20:43:59 morpheus kernel: [ 2635.151260] 72 03 11 04 00 00 00 0c 00 0a 80 00 00 00 00 00
Feb 7 20:43:59 morpheus kernel: [ 2635.151277] 01 47 3a c2
Feb 7 20:43:59 morpheus kernel: [ 2635.151284] sd 0:0:0:0: [sda] ASC=0x11 ASCQ=0x4
Feb 7 20:43:59 morpheus kernel: [ 2635.151291] sd 0:0:0:0: [sda] CDB: cdb[0]=0x28: 28 00 01 47 3a c0 00 00 08 00
Feb 7 20:43:59 morpheus kernel: [ 2635.151307] end_request: I/O error, dev sda, sector 21445314
Feb 7 20:43:59 morpheus kernel: [ 2635.151333] ata1: EH complete

I'll try with my other notebook.

m0nk