Last year, Mozilla discussed adding silent updating to Firefox, but then backed away from the plan before it wrapped up Firefox 4. Firefox 5, which is slated to ship next week, does not support silent updating.
Silent updates are meant to keep more users' software up-to-date and safer from the newest attacks. Adobe has struggled in the past to keep up with hackers who exploit unpatched PDF document vulnerabilities.
So far this year, Adobe has issued two regularly-scheduled security updates for Reader -- one in February, another this month -- but also delivered three emergency, or "out-of-band" patches for the program.
Reader 10.1 can be downloaded from Adobe's Web site. Alternately, users can run the program's update tool or wait for the software to prompt them that a new version is available.
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