Yes, I'm also having this problem...
Dolphin sometimes takes 2+ minutes to open on a Sandy Brige quad-core
CPU with Intel SSD (no swap partition). Some applications such as
kwrite also takes 2+ minutes to open.. All other apps open instantly,
including LibreOffice.
On my 6+ year old laptop, both these applications (Dolphin and Kwrite)
open within a few seconds so the problem is a strange one indeed.. As
the software between the two PCs is identical as far as I can tell.
It *MIGHT* have something to do with NTFS partitions on the local
machine. That's my only guess.. Or the fact that there is no swap
partition on that PC. Does anybody else have NTFS partitions on the
local machine and finding that Dolphin or kwrite takes several minutes
to open every time? Or somebody who don't have swap partitions finding
it takes minutes to open dolphin or kwrite?