The BlackBerry mobile e-mail service failed in North America on Monday in what appeared to be the second serious outage within a year, bringing disruption to the working lives of many executives and financiers for whom the gadget has become almost an extra appendage.
Dealmakers involved in Microsoft’s unsolicited takeover offer for Yahoo were among those to report a dislocation in communications, on what turned into a particularly busy day, with both companies firing off public broadsides over the bid.
