Hello, I have installed elementaryOS in VirtualBox with two Desktops (Pantheon and XFCE). The OnlyShowIn=...; option is always interpreted as NotShowIn=...;. However, the option NotShowIn=...; has no effect, i.e. all *.desktop files with this option are displayed everywhere on all desktop interfaces. This is a heavy bug in elementaryOS. Where and how can I make a bug report to the elementary maintainers? A bug report will probably not be successful. I have repositioned the system from the elementaryOS ISO in a USB stick. This stick starts infinitely slowly, more then 6 minutes. But he shows the problem with OnlyShowIn=...; and NotShowIn=...; not. This should lead to the problem of the numerous upgrades. with regards Ch. Hanisch