After my press realize I got this confirmation email: Thank you for using ***** Your press release from 2009-02-21 21:50:35 was included in ***** at 2009-02-21 21:53:05. That required exactly 0 days, 0 hours, 2 minutes and 30 seconds.. ...because I started submit my PR in the morning and submitted it to many sources I decided to try google if there are indexed some sites with my PR. I tried it at 22:13 and there was a few sites indexed including this one which approved my PR 20 minutes ago. It means that my press realize was indexed in 22 minutes and 30 seconds from the submission. Pretty cool...
It is possible to get press releases indexed pretty quickly. Personal experience at: http://www.newdesignworld.com/press/
I am sorry I have no idea I only submitted press realize about the option to host with us in new Swedish data center. This sort of PRs is accepted by almost every PR site so I didn't check out the rules for restrictions.