Where are the old versions?

[mm_freak]

Since an Upgrade to 2.6.11.3 with exactly the same kernel configuration, I have some lock-ups sometimes. I would like to downgrade to 2.6.10 again, where everything went fine. The problem is: I can't find the old versions for download. Where are they? I have downloaded the kernel source, the as2 patch - only grsecurity is missing now.

A downgrade should be secure, because I am not using RBAC.