Earlier today we had an incident that affected our event processing: incident report.
Unfortunately some of those events may have been lost, and caused the issue you're seeing here. This does mean that those commits may not show up on the Overview page, and any services related to those commits will not fire. You should be able to push commits now that will fire the correct services.
Seeing the same issue. In one repository, none of my commits are making it to the recent activity as of the last 2 or 3 days, while on the other repository its working normally. We are using codeship so its a problem, builds aren't getting done.
I'm still seeing this issue (20 minutes after a commit, it still doesn't appear in recent activity), and a similar issue in that when jira IDs are included in the commit comment bitbucket renders the link back to jira immediately, but jira seems to have long delays before it lists the commit with a link back to bitbucket.