I encountered a problem when using k3b to burn

I encountered a problem when using k3b for burning-Linux general technology-Linux technology and application information. The following is a detailed description. Question:

System
-----------------------
K3b Version: 1.0.5

KDE Version: 3.5.10-13. fc11 Fedora
QT Version: 3.3.8b
Kernel: 2.6.29.6-217.2.8.fc11.i686.PAE
Devices
-----------------------
Atapi dvd a DH16A3L 8H1B (/dev/sr0,) [CD-R, CD-RW, CD-ROM, DVD-ROM, DVD-R, DVD-RW, DVD-R DL, DVD + R, DVD + RW, DVD + r dl] [DVD-ROM, DVD-R sequence, DVD-R double sequence, DVD-R double jump, DVD-RAM, DVD-RW restriction overlay, DVD-RW sequence, DVD + RW, DVD + R, DVD + R double deck, CD-ROM, CD-R, CD-RW] [SAO, TAO, RAW, SAO/R96P, SAO/R96R, RAW/R16, RAW/R96P, RAW/R96R, restrict overwrite, layer jump]

TSSTcorp DVD-ROM TS-H352C CH01 (/dev/sr1,) [CD-ROM, DVD-ROM] [DVD-ROM, CD-ROM] [none]
Dvd + rw-format
-----------------------
* BD/DVD Â ± RW/-RAM format utility by, version 7.1.
* 4.7 GB DVD-RW media in Sequential mode detected.
:-(Unable to proceed with format: Device or resource busy

Dvd + rw-format command:
-----------------------
/Usr/bin/dvd + rw-format-gui-blank/dev/sr0




You can analyze it for me