Observations on KDE 4.1:
1. Everytime I restarted, Kate (the editor) and Kopete kept starting up: I didn’t find any references to these programs in the regular location (.kde4/Autostart), so I did a grep on ps (as in ‘ps -e | grep kate’ and ‘ps -e | kopete’), killed both instances and this seems to work. There’s probably a file (cache) related to this, but you know, this is Linux and it doesn’t hurt to kill an app so once in a while.
2. The Wifi Manager: Don’t forget to install the WIFI manager (KWifiManager): it doesn’t get installed by default! Additionally, to force autoconnection to your router, you must store the router password in KWallet.
3. I cannot stand the fact that if I choose to Shutdown KDE, that I have to confirm this in a second dialog box.
4. Both Dolphin and Gwenview currently don’t support RAW image view or thumbnail generation. Nautilus (Gnome’s filebrowser) does.
5. If you keep the control key pressed for a couple of seconds, Konqueror will show the shortcut keys for all links and buttons currently in view. This works pretty good.
KDE starts up pretty fast but takes a while to close off, that is, longer than shutting down Gnome. I’ve seen Windows Vista take longer to close off. Heck, even KDE starts up faster than a (fully) loaded Windows XP. Additionally, I have the feeling that (for example) Konqueror doesn’t properly dispose of its resources. However, I will readily admit that I made KDE the default desktop environment for this computer.