Booted Karmic alpha5 live CD. Changed no settings whatsoever.
Clicking and releasing the mouse on the trash icon in the bottom-right corner of the screen results in a very brief green artifact displayed on my screen. It's a line, probably a pixel wide, both at the far left and far right of the screen. It happens every time I release my mouse when clicking the trash icon. The line differs in length and position every time I click. So far, I found it only to happen when clicking the trash icon; opening a window doesn't result in the artifact.
I attached a video, showing the lines just before the window is opened.
Might be hardware related:
Using NVIDIA GeForce GTX 260, 192 core model, card by MSI. Screen is a Samsung Syncmaster 245B+, DVI connection. Single monitor. Mobo's an ASUS P5Q-E. Proc's an Intel Q9550 quad-core.
Date: Tue Sep 8 19:19:53 2009
DistroRelease: Ubuntu 9.10
LiveMediaBuild: Ubuntu 9.10 "Karmic Koala" - Alpha amd64 (20090902.1)
Package: metacity 1:2.27.0-0ubuntu3
ProcVersionSignature: Ubuntu 2.6.31-9.29-generic
Uname: Linux 2.6.31-9-generic x86_64