Acrobat X Pro
When this version of Acrobat creates a file by converting a web page, the margins are all wrong - they are too close to the edge of the page - and there appears to be no way to set the preferences for what the margins should be, or even the page size.
I have used Acrobat since version 4 and do not recall thios happening before. It is particularly annoying when you are trying to assemble a collection of pages from more than one web page, as the Append function ignores the margins set for previous pages. I am forced to print each page to PDF from my browser, saving each individual file, and then merge them into one file.