Must admit I dont have too much problem with the speed or the availability of the forums. The only time that I have encoutered some problems is around 7.00pm-8.00pm When firefox times out. IMHO not that much of a problem
As for the related debate of continue as is or pay then, I would be willing to pay an ammount per year or month whatever. However, I would want some transparency. Nothing too heavy just basically in order to upgrade the server or the bandwidth we need X ammount of people paying Y in order to do it. I don't think it can be escaped the fact that the forums build a community, communites build brand loyalty, Brand loyalty brings repeat business. Infinitely cheaper than marketing for new business thats for sure
I think the turning off of the search facility would be bad for two reasons
1) Duplicate threads or threads of a similar nature
2) People getting a bit annoyed "Did you not see the other thread!!!!!!!!!" kind of thing
So it's a bit counter productive
I still think there is some mileage for charging Members Market Access.