By the way, while I have been a VERY pro-bleeding-edge-driver individual all this time, I have to say that I have to take back my statements to the effect of it being flawless (well, I never said it was flawless per se, just that I hadn't run into any issues, which has so far been true).

For me, using "MobileHotSpot" with the bleeding edge driver causes a crash/shut-down of the entire N900 (this is a bug at least one other person reported, and I have been meaning to test it for around a month now - I finally got around to it tonight; so I know I'm not the only one having this issue), AND, trying to connect to an ad-hoc network causes an immediate shutdown as well (I typically can't get data through-put on ad-hoc wifi networks anyway, BUT, with the stock driver, I can at least connect to the network after a longer-than-normal wait).

So... yeah. This is with the patched osso-wlan, and Advanced Interface Switcher installed (might have something to do with it, but I doubt it). I have yet to do detailed testing, but I just thought I'd mention it.