there are capricious changes to make things worse in kde4 than before.
my two favorite examples: akregator and kmail. akregator used to display a list of feed names,
followed by a number in parens to show how many unread messages there were. now akregator has
a multi-column display: feed name, num messages, num unread. it's now much more difficult to
scan through the list to see what has unread messages.
kmail used to have a nice set of columns to show messages, with columns for things like subject,
from, date, etc. you could click on a column to sort by it. Now kmail show messages in horrid
multi-line format. it's much more difficult to scan through a list of messages by eye.
so to summarize, akregator gained columns where they weren't needed, and kmail lost columns
where they are needed!
and the kde devs wonder why people want to try something else??