Research and explain how modern systems or browsers deal with the aspects of the halting problem when a program takes too long to load. Provide examples of mechanisms or strategies implemented in real-world scenarios to manage unresponsive programs or prolonged loading times.

In computing, both operating systems and web browsers have a variety of mechanisms to effectively address challenges related to the problem when programs take an extended time to execute. Timeout mechanisms represent a fundamental strategy, whereby maximum time limits are set for specific operations. For example, web browsers utilize timeout mechanisms when loading web pages, terminating processes that exceed certain limits to prevent indefinite execution. Asynchronous execution is another prevalent approach, allowing tasks to run independently, thus preventing the entire program from halting while awaiting the completion of certain time consuming code. Automatic tab discarding is implemented in browsers like Google Chrome, automatically unloading or suspending inactive tabs to conserve system resources and improve overall responsiveness. These real-world mechanisms collectively solve the challenges associated with unresponsive programs and prolonged loading times, optimizing the performance of modern systems and browsers.