Version: 0.4 (using KDE 4.3.5) Installed from: Ubuntu Packages It looks like kbluetooth uses improper icon file for systray. I have sharp 22x22 kbluetooth icon in oxygen icons directory and yet in my systray I see ugly fuzzy icon - most likely because it is scaled from different size. This should be easy to fix and it would definitely improve kbluetooth "feel" for many users.
I can confirm that this also affects me.
*** This bug has been marked as a duplicate of bug 270702 ***