So, you did not mention your openSUSE version or if 32/64 bit. Trying istanbul version 0.2.2 in openSUSE 11.4 64 Bit KDE, I found that indeed most often, the program will crash when you stop recording your desktop and go to save, though it did not crash every time. This program originated with Gnome and is old, its not been updated since 2007. If this was me, I find a copy of openSUSE 11.3/GNOME and see if it would work with that, else I would give up and look for something else.
I use ffmpeg to record desktop activity. Install ffmpeg, faad, faac, x264 from packman repo. Create a text file named libx264-HQ.ffpreset which will contain
sorry guys its 64 bit version i just tried the record my desktop and it doesnt work to good either
ill try that ffmpeg later on but i would rather use istanbul or recordmydesktop