1. The auto playback function, which starts playing a disc when you put it in, doesn't always work. Sometimes after waiting a while I have to manually open a DVD I put in. This error is irregular; when trying with the same disc several times it sometimes starts on its own and sometimes not.
2. Sometimes when I jump around in a DVD movie by pressing on the time bar VLC crashes.
3. When trying to play any of the three Bourne films i noticed the menus were distorted. When you slide the cursor over an alternative in the menu it's supposed to turn orange, but in VLC 1.0.0-rc1 there's random red spots in the orange. Also when I opened the subtitles menu there were no visible text on the links, just the red-orange field (when you moved the cursor over the menu page) where the text ought to be. the menu worked but you had to guess which language you were choosing.
I've never experienced any of these errors in any previous versions of VLC I've tested.