mgo, how much slower is it? are things like the cpu/ram/hard drive the same even though the model is the same, cpus may be different for the same model. its only slow the 1st time you open any program right? how long from the time it first gets to the desktop do you wait before opening programs that open slower on this model? a free program you can download and run on both computers is cpuz which will tell you your current cpu speed even when it does the throttle to other clocks. i dont think there is a problem with your other laptop, however you bought it used so its still a good idea to test out hardware with things like memtest+ and a hard drive diag you can download also, both are free and if they find an error, than something can be wrong, but since it doesnt stay slow all the time while your using it, and its just the 1st time you open a program, i think its due to the fact that programs not in ram take longer to load from the hard drive on the first load and once they are in memory they are faster to open.
DetroitSportsFan, yes i agree, the # of problems idea is a bad generalization and not accurate as you mentioned with that perfect example, and i feel that 99.9 percent of problems can be fixed by not reinstalling, but my 1st 2 years as a tech shown me that on computers that do have bad problems found by doing the same pattern for finding any problems on all machies start to finish, only rarely does a pc come back with the same or other related problems due to not just reinstalling once i find any lockups with any other major problems. before it took 5x longer avoiding reinstall and some problems persisted or new ones emerged. i actually just reinstall on another hard drive while scanning the original drive for viruses, checking it with a hard drive diagnostic, and on the original pc do memtest. once that routine is done i can actually fix the computer even simple things. it just never gets done constantly finding little glitch after glitch, i do the same when i really screw up my programing of something, i start a new file and start over taking from the old program i made. lol.