Are you trying to use flash in Konqueror? And is it the flashplayer-mozilla package? Or something GNU Gnash-based (like Klash)? All options which don't involve Adobe Flash on Firefox have always been a bit dodgy, IMO. When I used to use KDE (ah happy days) I used to reserve Firefox for viewing Flash content and blocked Konqueror from being able to load Flash stuff.
No:
Flash Player is from debian-multimedia.org and am using it with Iceweasel (i.e. Firefox) on Debian Testing AMD64.
I think it's a known issue with nspluginwrapper, which has just coincided with my problems with KDE 4.
It can't really be that broken. I think it's going to take a long time before KDE 4 is as stable as 3.5 was before it was effectively discontinued. Maybe use something else in the meantime?
It is quite horrible - they've just either dropped or not released a load of the apps that I had got configured to do things how I like e.g. KAudioCreator.
I might move to something else, not decided yet.
The other reason I'm considering reinstalling is that my PlayStation pads no longer work through a USB adaptor. They were originally just recognised, but something's changed - whether it's a kernel upgrade or the kde 4 upgrade, I don't know. Haven't had any luck diagnosing the problem, though. :( (tried two adaptors - definitely not a hardware issue).
Maybe I will consider another window manager. What's the point in getting dependent on KDE (or GNOME) apps, if you have to wait a coupe of years for them to be supported after every upgrade .... *grrr*
Peter.