Short bio: Computer Scientist, FOSS supporter (read more)
Tux Machines (TM)-specific
Over in the land of LAMP (Linux, Apache, MySQL and the scripting language of your choice that begins with P), they're discovering that backward compatibility is a bear.
Welcome to the world of serious software development.
I think far too many people don't realize that programs always end up with incompatibility problems. Even people who believe in running only Microsoft programs encounter this problem all the time.