For a list of 2.8-stable packages errata, click here.
For a list of 2.9-stable packages errata, click here.
For a list of 3.0-stable packages errata, click here.
For a list of 3.1-stable packages errata, click here.
For a list of 3.2-stable packages errata, click here.
For a list of 3.3-stable packages errata, click here.
For a list of 3.4-stable packages errata, click here.
For a list of 3.5-stable packages errata, click here.
For a list of 3.6-stable packages errata, click here.
For a list of 3.7-stable packages errata, click here.
For a list of 3.8-stable packages errata, click here.
For a list of 3.9-stable packages errata, click here.
For a list of 4.0-stable packages errata, click here.

This is an abbreviated change list for OpenBSD 4.1-stable packages: