Edge rails a memory hog?

I just recently upgraded my app to use edge rails and I immediately started hitting the TextDrive memory limits of 48MBs resident memory per fcgi. This was never a problem for me in the past. So, I finally decided to downgrade my app back to 1.1.6 and the memory usage is much lower per fcgi.

As a completely non-scientific example, on edge rails, within 1-2 requests I could get the memory to jump from ~40 MBs to ~46MBs by just querying for 10 results.

On 1.1.6, the memory starts out closer to 33MBs per fcgi and will rise to ~38MBs after 1-2 requests.

Has anyone else seen this behavior? I have also verified this on the 1-1-pre-release branch.

Thanks,