[shower]

I think that it would be ok to have the choice to mark your thread as solved, after your problem has been resolved. the good point about having the SOLVED choice is that later when somebody else stumbles across the same trouble, and then they have a search it can make it easier for them to select which thread they want to read, also prevents others from following a thread without reading to the end of it first, only to finish the problem wasn't solved and maybe end up digging them selves in a bigger whole.