"System" stickies and hijacked threads

Hi. I noticed a few issues today. In case they’re not on your todo yet here ya go:

The stickies posted by system in these categories are blank and indicating -1 replies:
Jobs, Coding, Misc, Game Engine, Support, Artwork, Contests, General Forums

I noticed many user’s hijacked (missing?) topics are listed in that activity list.

A default “edit this” post here:
Welcome to Discourse (strange url for 1st and only post)

Thanks and bravo!