I've just installed the latest x64 11.3, but I've had this issue for about a month now on 11.2 and previous. I've not changed anything myself other than adding a (perfectly normal) partition on one HD. Previous to about a month ago there was no problem.
When starting DO, either from the pinned shortcut or by double clicking the desktop, the lister loads up looking normal but is completely frozen. This lasts about a full minute or longer. All I get is the swirly 'waiting' cursor if I move over the lister. I can't close it or do anything with it.
If I try opening more listers, mostly they will freeze like the first, but occasionally one will work normally even though the others remain frozen for a while.
Is there anything I can do to find out what is causing this, a debug setting or something? I'm wildly guessing that DO is trying to access something on my system that is not responding in a timely fashion, but I have no idea what that could be or how to tell.