few questions:
1. (guessing from one of the links above) Are you using sun boxen? (sun x64 servers get me hot and bothered.

)
2. I know you are only using these for new additions, but when could we expect the full shared server line to be updated?
3. Will you be taking advantage of the 64 bit-ness these servers will have with RHEL for AMD64? (not that we'd notice/need the difference) Or maybe you'll be using a different OS/setup?
4. Will you be taking advantage of the NX bit? (silly i know, but still wondering)