Much like how I can no longer turn on compositing without causing my desktop to flicker whenever I open the Application Launcher. As of 4.5.
In fact it's a general trend I've faced in the progress of open source software: 3 steps forward (bug fixes and new features), 2 steps back (bad, sometimes critical regressions).
KDE or graphic drivers fault? Or both?
I didn't face something like this. I usually see performance and features and I cannot say the same about non open source software which usually makes one step forward and few steps backward.In fact it's a general trend I've faced in the progress of open source software: 3 steps forward (bug fixes and new features), 2 steps back (bad, sometimes critical regressions).
I'm still waiting for an adequate replacement for Konqueror's formerly glorious file-management features. Thanks to myriad "kfile-plugins" packages, you could hover over a file in Konqueror 3, and it would be surprising if Konqueror didn't have a bunch of things to tell you about it. Like hovering over .torrent files, the size of the torrent's data, the directory or file it contains, the tracker listed, etc, all this info would be at your fingertips. Hover over a video or audio file? Length info, bitrate info, framerate info, etc etc.
Dolphin has the "information" panel which does basically nothing except lag out the UI coming up with miserable thumbnails. It tells the size of a file, and the modification date, and, well, that's just about it. Guess what KDE devs? That information is already available in the file list!
/lament
Obviously the KDE point releases are including major changes if they are breaking things, and are not just minor fixes. They need to hold back these new releases until regressions have been dealt with then it sounds to me like. Stay in beta longer or something.
Office is now including ODF support by default AFAIK. Not really a shocker though. It's in it's own little "other formats" section, i.e. it is buried, so saving *to* that format is hard, while reading from it is easy, meaning they are encouraging saving in their own format that they control which thus can forever be incompatible in various ways with all other non-MS products.
https://bugs.kde.org/show_bug.cgi?id=249512 is the bug report. The problem is due to faulty drivers and KDE 4.5 using direct rendering by default whereas KDE 4.4 didn't for non-nvidia. It can be fixed with a configuration change.
Unless you're using NVIDIA, in that case there's different bugs and fixes.