For a problem that was supposed to have been "unambiguously solved" the BlackBerry outages [1] have been strangely persistent. While RIM was able to find the reasons [2] for the massive outages that struck earlier this year, a continuing string of smaller service breaks have occurred in both RIM's network and the AT&T EDGE [3] network. The most significant questions (aside from how to keep the network up and running) are how much downtime BlackBerry users are willing to tolerate--and whether the existing outages have already passed that point.

For more on BlackBerry's blackouts:
- read the complete article [4] at eWeek