Recently, Rapidshare has introduced its Happy Hours. If you find it tough to solve the complex Cat CAPTCHA images in RapidShare or need to download multiple files in one session, try postponing your downloads until the happy hour is active.
RapidShare activates their ‘happy hour’ for 18 consecutive hours on weekdays and for 14 hours on weekends starting at midnight British Summer time (UTC+1) or 5:30 AM if you’re in India.
You can use few firefox extension that will check whether Rapidshare Happy Hours are currently active or not. One of them is called Happychecker
Firefox users Download Happychecker