Lepton, for ease of use and being able to update to a much newer, much more secure version of phpBB, converting to mySQL is clearly a priority. The security holes are part of why the SFC2.net forums got hacked while they were still on bozobits.
All that said, I'm just glad that Bonk fixed the e-mail notification. Now I acually get a link I can use when being notified of a new post in a thread to which I have subscribed, which wasn't happening after the hack on bozobits.