It is extremely bloated. I mean Acrobat is just huge to just read and create PDF files. Dopdf and FoxIt Reader combined are still 1/4 of the size of Acrobat.
People talk aobut how Office is getting bloated and all that. Adobe is the same way. CS3 MAster Collection takes up around 15GB of space. Just a insane amount of space.
In all honesty there are so many options out there now for PDF that Adobe is starting to feel the pressure. Not to mention the price issue of Adobe products...