I've had a look at Hardy Heron Alpha 6 (2.6.24-11) and it appears it had the latest code to fix this problem with the slub allocator. I cannot re-produce it on my 2.6.24-11 kernel based installation, suggesting the fix works in the latest kernel.
I suggest trying Hardy Heron Alpha 6 and seeing if it resolves the problem. Please let us know if it helps.
I've had a look at Hardy Heron Alpha 6 (2.6.24-11) and it appears it had the latest code to fix this problem with the slub allocator. I cannot re-produce it on my 2.6.24-11 kernel based installation, suggesting the fix works in the latest kernel.
I suggest trying Hardy Heron Alpha 6 and seeing if it resolves the problem. Please let us know if it helps.