Diablo 3 - Lifesteal Nerf
It seems that Blizzard is really pushing to find a good solution to replace the current lifesteal mechanics in Diablo 3. As it stands now most characters are geared to 100,000 DPS or better. At these damage numbers, life steal is just too powerful.
Many heroes die today due to lag, disconnects, or high spike damage - which in some cases has to be a big enough spike to one shot someone. This is largely due to life steal healing for much more life in a very short period of time on account of very high damage out put, and increased monster density on higher monster powers of Inferno.
Check out the video for more information on this. Links back to the pages that are shown in the video are available on the YouTube watch page where this video is being hosted. Read the source pages if you want to get a broader picture of what has been stated to draw your own conclusions.