Many significant system extensions are hard to modularize. Consequently, their addition§to a software system can jeopardize fundamental software engineering principles such§as maintainability, understandability and evolvability. §§In order to better determine the efficacy of modern modularization techniques such§as aspect-oriented programming (AOP) in the context of system extensions, we offer up§a case study based on distribution. This work discusses how aspects can enhance§extensibility of low-level system infrastructure software and be effectively integrated with§existing software...