I searched and didn't find most of these mentioned.
I have tried several versions of VLC over the past couple of years on two different systems and so far 0.8.4a is the first one that's actually worked for me. However, it is still extremely buggy for me.
First, I only have a couple of DVDs to try it on (yes, I know I'm way behind the times). On Team American, World Police Unrated, if I choose any deinterlacing method other than Blend, VLC crashes when I select from the DVD menus, or if I move the position slider while it's playing. On a cheap Dollar-DVD of the movie Creature, other deinterlacing methods often cause it to show a grey window instead of the image, but this isn't consistent.
Changing options in the preferences often causes an Illegal Operation crash. This seems to happen at random, although I've noticed that checking the box to show advanced options for some of the sections often causes a crash. Also, changing too many of the parameters in the Spectrometer settings will often cause a crash.
Trying to display any visualizations while playing a video is just asking for trouble. If VLC doesn't crash immediately, it bogs down to the point where the audio starts looping and the mouse pointer takes 10-20 seconds to move.
WMV files usually don't play properly. There doesn't seem to be any pattern to which ones work and which ones don't. Some WMV9 files play fine. Some are extremely jittery. One set of files (any one of them) causes VLC to open three additional windows labelled "Software RGB DirectX Output". A WMV8 file displays the image as if it has been run through Edge Detection and Emboss filters in an image processing program. Even the ones that play mostly the way they should seem to stutter. It's like they display 2 frames forward and then 1 frame back.
Pressing 'I' in fullscreen mode brings up a blank copy of the VLC window complete with a big blank video area, which covers a large portion of the screen. Checking the option in the prefs to show the interface does nothing. I checked it, saved it, then opened a file, switched to fullscreen, moved the pointer to the top of the screen and nothing happened.
When I first installed it (using the EXE) it would open most files instantly. Now, the main video file I used for testing causes it to go into limbo for the first 10-20 seconds. There is no picture or sound and the controls don't respond. Then the picture appears and the audio starts playing, already 10-20 seconds into the file. If I stop/start it, everything is normal. Also, if I close VLC and immediately re-run it and load the same file it works fine, but the first time I open it after VLC hasn't been used in a while starts with a big pause upon loading the file.
And yes, I have tried using the reset menu item. It didn't make any difference.
My system;
P4 1.8Ghz, Windows 98SE, DirectX9c, 512MB RAM, GeForce 4 MX440, Intel Soundmax onboard sound.