As different versions of Word are the bane of MS Office users, so too is Adobe Reader the bane of PDF's... it's unbearably slow and massively bloated for what most people need. Thankfully, there are alternatives that can provide greater functionality, faster load times, and a smaller memory footprint.
Free Alternatives to Adobe Reader for Viewing PDF's @ Techgage.com
Free Alternatives to Adobe Reader for Viewing PDF's @ Techgage.com