I run a large web community site (300k+ registered members) that has SMF 1.x fully integrated into it, found out about XF the other day, and fell in love. However, I'm concerned about the conversion. I know there isn't a converter for SMF, but I have vBulletin and Impex from a project I did awhile back, so I can import that way if necessary. The only problem with that being that a fellow developer I work with has an XF license and he let me run a test import on his development environment while we dug through code to figure out whether the software would work for my own site integration needs and it didn't go so well. The SMF->VB conversion worked well enough, but the member import from VB->XF is taking forever. 100 people every 11-30 seconds, and after a dozen or so cycles it completely times out the server (of which is a dedicated web server) and has to be manually resumed. Is this normal? Is it just his dev environment version? Or am I just using the wrong tools? Can this forum software even handle that many members? SMF wasn't great about it... in fact, I had to rip out the guts of a few major processes (like birthday/calendar/etc. pseudo-crons and whatnot) because they would bring us down in a blink since they had to run on every member. Is this something I should consider a showstopper, or are there other (more reliable) methods of conversion? I can't really rely on a one-time paid service to do it since I need to be able to convert multiple times while I develop the new site version.