I think 15/30 should work well. How much longer do you guys want to delay this? I have already started coding it in, but can hold off any final commits until there is a clear consesus about the hashdrift, interval, and fork time.
Please continue with 15/30 listening to the community this seems to be the most agreed upon. Once this is completed SupaSonic will implement the GUI modifications while I contact the exchanges with the raw wallet (only modification including the fork)
For the time please allow 30 days - this should give me plenty of time to work with the exchanges - they usually take 15 days or so to complete upgrades. I can also let them know when the expected fork will happen.
RoboGuy stuck in a network alert a few upgrades ago - please make sure to update the message to alert everyone when they open the wallet to upgrade to the newest version to help us get out the message.