If your attic is really hot...
Our attic was always really hot (typically 30°F above ambient or more in the summer), but I saw lots of soffit and ridge vents so I figured that was normal.
Upon selling the house, the buyer's inspector said all the soffit vents were clogged with insulation. Indeed, the installers had PACKED fiberglass insulation in EVERY rafter bay down into the soffits. In one instance, I pulled an accordioned 2ft length of batt out of the soffit, for pete's sake.
So... I got several hours of hot, sweaty, dirty, itchy work and the new owners get to enjoy lower A/C bills. Great.
Learn from my mistake -- check your attic ASAP!