A bug bit Gmail on Monday and almost half of the webmail service's users are experiencing email delivery delays and problems downloading attachments.
Google first acknowledged the problem shortly before 10:30 a.m. U.S. Eastern Time and has been wrestling with it ever since, according to information on the Google Apps Status page.
In an update posted at around 2 p.m., the company disclosed that "less than 50 percent" of users had been impacted, which can safely be assumed to mean that at least 49 percent of users got hit.
Gmail has more than 425 million active users.
The latest update, posted at 3 p.m., stated that the problem has been solved "for some users" and that it should be fixed for everyone affected at around 4 p.m.
The Google Docs word processing application and Presentation slide creation application have also been experiencing a disruption during the same timeframe, but the company hasn't disclosed the nature of that problem and the scope of users impacted.
Google didn't immediately respond to a request for comment.
Juan Carlos Perez covers enterprise communication/collaboration suites, operating systems, browsers and general technology breaking news for The IDG News Service. Follow Juan on Twitter at @JuanCPerezIDG.
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