I have a 2009 Specialized Allez Sport C2.
When pedaling (actually only under load, not when just turning the crank while it's on a stand) the bottom bracket squeaks or chirps. I first thought it was birds chirping; then I realized they were remarkably regular in their chirping. Then I realized it was my bike. The sound has definitely gotten worse over time.
What should I be looking at in terms of fixing this? Do I need to replace the bottom bracket?