files[] = my_module.module in .info file

I have a new my_module.info file with this line:

files[] = my_module.module

It is wrong because it is not working. Please see http://drupal.org/node/542202

files (Optional)
Drupal now supports a dynamic-loading code registry. To support it, all modules must now declare any code files containing class or interface declarations in the .info file, like so:
name = Really Neat Widget
...
files[] = example.test
When a module is enabled, Drupal will rescan all declared files and index all the classes and interfaces that it finds. Classes will be loaded automatically by PHP when they are first accessed.