I was wondering about a MTB (diamonback outlook). I just had the bike tuned, and now the front brake seems to have a little more stopping power to it. I don't actually know what the mechanic did. Tomorrow I'll have to try out locking up the front wheel again.
The whole reason I brought this up was, that I was under the impression that if I couldn't lock up the wheel, then the brakes must not have enough stopping power and that they needed to be readjusted.