Not that I do it competitively, however, I do have two machines dedicated to F@H and give as much as possible when I'm not programming on my other machines. It takes my best machine an hour to do 1% of a unit (on average).
The three I've done come from the PS3, I've just installed it today on the desktop. Some of the units are bigger than others though, I saw one at 16hours, and the other two have been about 6-8hours. Still, shows how quick the cell processor is though, plus you get to look at a nice picture of the earth whilst it does it
In fairness though, I think the desktop clients run way slower than they could do to stop them interfering withother programs.
I downloaded the linux version, which is also an .exe for some reason, and am now running it. It says that this one will be done on the 30th of september...
I downloaded the linux version, which is also an .exe for some reason, and am now running it. It says that this one will be done on the 30th of september...