Comment 31 for bug 554433

I am still seeing this behaviour - not with blank discs, but with standard, store-bought movies - with Lucid Lynx, with all updates applied as of about 12 hours ago. This machine was upgraded from Karmic Koala, which exhibited identical behaviour.

Note also that this is not a 100%-reproducible condition - sometimes everything will work properly. I haven't the faintest idea what the difference is, except that some DVDs seem to have a much higher chance of triggering it.

Either there are multiple bugs with identical symptoms (entirely possible), or this wasn't fixed entirely by udev. What I am seeing is exactly described by the original post, up to and including the strange "eject" behaviour.