Comment 2 for bug 973277

Just as a comment: After the first error you have a decent chance to report errors which depend on the previous error.
'example-data' can't be installed for whatever reason - the logical consequence is that 'example' will fail to install, too, resulting in a useless bugreport. After the first "valid" failure you can easily accumulate hundreds of followups…

3 is not a hard-coded limit btw. APT::Apport::MaxReports is the relevant config option if you desire to play with different values.