This week's book giveaway is in the OO, Patterns, UML and Refactoring forum. We're giving away four copies of Refactoring for Software Design Smells: Managing Technical Debt and have Girish Suryanarayana, Ganesh Samarthyam & Tushar Sharma on-line! See this thread for details.
I'll take a stab at this. Asking for differences between IoC and AOP is kind of like asking the difference between apples and oranges.
Aspect-Oriented Programming (AOP) is concerned mainly with abstracting functionality that applies across the board to many components of your application. For example, logging and security. These have little or nothing to do with the actual business functionality but are essential system-wide functions nonetheless.
Inversion of Control (IoC), a.k.a. Dependency Injection (DI) is concerned with maintaining loose coupling and managing the dependencies between the components of an application.