I have a 5 year old computer using Windows XP and I am disabled, living on Social Security Disability. I am a computer novice - AND unable to purchase a new $1,200.00 Adobe program to replace the one that came with my computer. I downloaded the recommended plug-in for Adobe as recommended by your site, and now - while adobe shows forms accurately on screen - it prints completely corrupted. (For example - IRS forms print in something that looks like machine programming language.) My Adobe is completely corrupted - I cannot even use IE browser to print forms. It literally worked fine 5 minutes before your FF4 update. What do I do now? I've since tried a "find or fix" to my system - so there's no way to make a system restore work.