If you are growing tired of Adobe Acrobat's bulky reader, there's hope in Foxit Software's free PDF reader. This app is fast, renders stuff much better, and is not a resource hog as Acrobat is. I had come across it 3 years ago, but at the time, I still has Acrobat 5, which was moderately good. Then came 6.x and 7.x and the angst grew, so I had been looking for an alternative to Acrobat Reader. The answer came in Foxit's extremely small application that does wonders! Consider this: Acrobat uses about 80MB working with a 9MB PDF file, takes forever to install and get started, causes Firefox to hang while closing, browses documents sluggishly, does a bad job rendering "weird" pages, and has a habit of calling home for updates; Foxit uses only 18MB for the same document, displays/renders fonts and images much crisper, and is a breeze to start and install. In fact, it is the fastest install I have ever seen! The installer itself is small - 2.5MB. I'm impressed by this program.
The guys at Adobe must be scratching their heads on this: how does a relatively unknown company do their idea better than them? Performance-wise, it's superior to Acrobat. I haven't used it long enough to know what other features and issues it has, but for my needs of reading (huge) PDF's, this is the clear choice.