Critical: A bug which has a severe impact on a large portion of Ubuntu users
Medium: A functionality bug of the standard variety. Most bugs are of Medium severity, for example:
* Has moderate impact on a core application
* Has a severe impact on a non-core application
It's a bug causing problems, but it's not a critical bug as it won't stop Ubuntu from being released.
From: https:/ /wiki.ubuntu. com/Bugs/ Importance
Critical: A bug which has a severe impact on a large portion of Ubuntu users
Medium: A functionality bug of the standard variety. Most bugs are of Medium severity, for example:
* Has moderate impact on a core application
* Has a severe impact on a non-core application
It's a bug causing problems, but it's not a critical bug as it won't stop Ubuntu from being released.