As a small-time computer consultant I’ve dealt with dozens of customers who bring me computers loaded with viruses and spyware. I’m of the school of thought that a reformat is never neccessary, that–given enough work–any infestation can be overcome. But there is a point of diminishing returns, and I’d like to know where others think that point lies.
I’ve arbitrarily decided that at my current rates it’s no longer worth my customer’s hard-earned money to try and root out an infestation beyond two hours of labor. After that I suggest a reformat. Where do you draw the line?