Dolphin, that underappreciated file manager shipped with KDE, has had a hard time. Many users didn't want it in the first place. Many were upset that it replaced Konqueror as the default file manager. Some have real complaints and will never be happy with it. But those who use Dolphin might be happy with some of the newest changes coming in KDE 4.8.
Peter Penz today blogged about his latest work on Dolphin and the first improvement he discussed was the "view-engine" for the view mode. Dolphin currently uses Qt's Interview Framework which might be slow, unstable, and a pain for developers to work with. For this reason Penz said he will be switching to Itemviews-NG which is said to make things "simpler, faster, and easier to use."
rest here