dvd drive unmounts and is lost when burned dvd is inserted!

[Poorsaxon]

Any dvd or cd that was burned with brasero or any other program on the same system or any other system can't be read. Dvd drive is "lost" upon inserting media. It simply disappears from places/computer.

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: software-center 4.0.2
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic x86_64
Architecture: amd64
Date: Wed Jun 15 01:32:05 2011
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=en_US:en
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: software-center
UpgradeStatus: No upgrade log present (probably fresh install)

[Piotr Żurek (piotrek.zurek)]

Also, burning in K3B works.