Installed Push Fix, which was no longer on the repository listed above, from Sinful Repository. Got other people's push notifications and none of my own. Uninstalled push fix, problem not solved. Removed jailbreak by restoring phone as new (though I did then sync it from a former back-up), problem still not solved. I'm running a legit AT&T 3GS here (I didn't unlock it, just jailbroke it with blackra1n), but it seems that the Push Fix bug still applies. I figured by removing Push Fix the bug would be gone, but no dice.
Turns out that I think most of the reason I'm not getting push notifications anywhere is related to Facebook post-3.1 update, because uninstalling it seems to allow me to receive push again. But I'm still getting someone else's push in Spanish, and though people are complaining they aren't getting their Facebook push updates, I've only run into one guy in the last four days who's had his Facebook blocking all of his push updates as well.
Not sure what to do--any suggestions?