I CAN HAZ MANY HOURS OF IPOD SYNCING? KTHXBYE!
Acrobat reader does one thing poorly -- read PDFs. To do this it needs to download updates at least twice a month. Acrobat's other big feature is the ability to bring your system to a roaring halt while it boots up its massive amount of plugins and libraries. All this to display (wait for it) -- a page.
FoxIt Reader is a much better solution. Download it, and you'll no longer cringe each time your accidentally click on a PDF link while browsing the internet.
Apple lovers, if you think you're off the hook, read the headline. That's Number Two.