Hello,
I got an annoying problem with dolphin: When I start it it opens normal without previews, then hangs for 10 seconds or so, it doesn't react at all, even when I close it. Then, after it took it's time, it shows previews and works normal. When I open a new instance or even a new tab, the behaviour is the same. Also when I want to move files to trash, I press del to throw them in trash, nothing happens and after a few seconds it is moved to trash. When I undo the delete via ctrl+z this also needs long. Normal cut + paste operations to other folders are working immediately, delete without trash also works well.
While dolphin takes this break, the cpu load goes up. I got no network folders on my system, there are only some unmounted windows drives. All harddisk's SMART values are ok. I switched off preview, without any changes on that problem. I checked trash for some corrupted files, it's all empty. I switched off the filesize check before moving to trash in dolphin. I tried nautilus - works well, without any lags. I also tried dolphin as root (there is no other user on my system, so I decided for this one test root is ok) - this also works fine, so it only affects my user.
GDB only brings these three lines:

Code: Select all

dolphin(2228) KXMLGUI::ActionList::plug: Index  25  is not within range (0 -  13
[New Thread 0x7fffe9a78700 (LWP 2232)]
[New Thread 0x7fffe91cb700 (LWP 2233)]

And simply starting dolphin from command line only shows the first line of these three.
Can anyone tell me how to find out what's wrong with dolphin? An output with a significant error message or any suggestion where to look, would help a lot!
Versions:
OS: Fedora 21 x86_64
KDE: 4.14.11
Dolphin: 15.04.0

The cpu load of what process goes up? Dolphin? (check top or ksysguard)

It's Dolphin which caueses the load, top shows 95% and ksysguard 24%, I suggest the values in ksysguard are absolute, while top shows the load per core, so at least both say one core is on full load.

do you have ~/.local/share/baloo/index and what size is it? (is it empty?)

Yes the folder is there and there's also a process baloo in ksysguard.

It's supposed to be a file (this is a wild guess; there seems to be a bug if it's not a valid database - clients start running wild and apparently an invalid file is created if baloo is disabled)

Oh sorry, I didn't read properly and have overseen the last word of the path. There is no file or folder index in my baloo folder and it's 87 MB in size, so I don't think this is the issue.