Images in SwingSet2 are often displayed incorrectly on my Windows Vista machine. To be precise, a part of each image is displayed repeatedly like laying tiles. Please see attached JPG files.

Some additional info:
- I see this phenomenon with JDK7-b37. I haven't tried other JDK7 promotion builds or earlier JDKs.
- VM seems to have nothing to do with this phenomenon. This is reproducible both with client and server VMs.
- This phenomenon seems to occur when the usage rate of memory is comparatively high. I attached an image of TaskManager when I saw this symptom. (CPU Usage: 4%, Physical Memory: 84%) I happened to find this symptom when I was investigating InputMethod bugs which seems to be related to high memory usage.
- My machine's CPU: Athlon 64 X2, Memory: 1.5GB, Graphic: NVIDIA GeForce 7600 GS
- It may be difficult to reproduce this phenomenon on other machines. I tried to reproduce it on my another Vista machine but couldn't reproduce.
I ran SwingSet2 on 6u6, 6u7, and 6u10.
It wasn't reproducible on 6u6 and 6u7 and was reprducible on 6u10.
This seems to be a regression.