Well we don't have some of the snappier features more modern forum software has BUT the venerable phpbb3 is pretty solid these days and the upgrade process is a lot easier than it has ever been.
In this case "wouldn't have known it was upgraded" is intended as a compliment
Yes there's vB with all manner of bells and whistles but with those bells and whistles come headaches, ludicrous pricing, and a company with a history of lying ("free lifetime upgrades if you buy the expensive one" being followed up by "yeah we changed our minds, you're gonna have to pay again for v4, deal with it")
I had the problem before the upgrade, it might just be my shit connection.
I'm on an old exchange where I can expect only 10Mbs on ADSL2+. The upside of that being I have no cap though because my ISP doesn't meter TiVo traffic and can't work out what's TiVo or not.