I did a quick search, but didn't find this specific case.
Using drupal 6.14 and a multilingual setup.
When a node with title X in language 1 exists. And we create a different node (of the same type) with also title X but in language 2, pathauto creates the exact alias. And doesn't check if the alias is already in use.
This goes for a config with only a Default path pattern and using the title to create an alias.
Comments
Comment #1
dave reidThat's probably because you can create multiple url aliases for different languages. You have to enable the features like language prefixing or domains from core's locale.module to actually distinguish between different languages.