Interface corruption

I have started getting these strange lines across my C4D interface. It only seems to happen when I use it rather than other software. Not even sure if R13 did this but it's only started to happen very recently. It also corrupts the desktop. Only way to get rid of it is to adjust the screen size. The line then fades over a second. I have an Early 2009 Mac Pro with the ATI Radeon HD 4870 512 MB card. I guess that's a little weedy now isn't it.

It looks to me like a graphics card issue but would love peoples suggestions. It's very annoying whichever way you look at it.

screen glitch image

I have the same machine and card as you and running R13 but I've never seen this. Unfortunately that doesn't really help you but as a first step you could try using Disk Utility and Repair Permissions.

I only ever had a similar effect with defective graphics cards (memory).

Had/have similar anomalies as mentioned in an old thread
http://forums.cgsociety.org/showthread.php?t=1067812
The anomaly came back and now use use c4d from an external HD with no problems.

Note: Possible remedy ?
Apple sent out a notice just this week stating that the seagate HDs in late 2009
and newer are suspect to failure and that replacement will be done free of charge.

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