Free File Fillable Forms Aren't-At Least For Me

Jon - I downloaded a 14040 from

FFFF are a different animal from the pdfs. The pdfs allow you type numbers and print these nicely, but nothing further. FFFF automatically do arithmetic for you, link to other forms when called for, eg. 1040A total. They also provide free efiling. The last didnt work for me last year because it complained my federal tax withheld did not match W2. That was due to including estimated tax payments in the total, which FFFF did not handle correctly.

The FFFF appear to work properly for me under InterNet Explorer. Many websites dont recognize other browsers.

I cannot get it to work on XP (neither IE8 nor FF V3.5.7). I downloaded and installed Microsoft SilverLight plugin, as instucted, Set up a new user account, and it blows up d/l'ing "my data", with an error message re. "refresh browser". I SUSPECT it's something to do with wtf "SilverLight" does, but that's a guess.

btw: Last year, freefillableforms.org worked fine for me. Exactly as promised.