There's always a chance a person or manufacturer will make a mistake or cheat you, but for the most part they are honest folks who stop at cutting corners. (Using cheap parts to keep their costs low.) However, it's more likely that Adobe Photoshop is reading the current speed of your processor, and not what it's capable of. I'd suggest downloading and running the free program Everest, which will tell you everything you ever wanted to know about your system. (Including brand name, model number, serial number, and specs.) Under processor, check out what the current speed is, and what the max speed is. If they match up, you're good to go. However, if it states your processor isn't what you were quoted, you might want to have a talk with Honest Joe.

Hope this helps,
John


P.S. If you have an AMD processor, and you were told it was a Athlon 3200 (not 3.2GHz), then 2.2GHz is fine. This is because AMD processors can achieve the same performance as an Intel at a lower clock speed, thus reducing the amount of power required and the amount of heat generated. (Basically, an AthlonXP/64 3200 runs at 2.2GHz and is approximately equivilent to an Intel Pentium 4 3.2GHz)