I'm relatively new to RoR (my first experience far from pleasant) and just stuck with a simple file upload application. When I upload file I can see a temp file created on the server but it's smaller than the file I upload. I assume I get this error 'cause browser just closes connection on me before the whole file gets transmitted ( it happens on any file size). What puzzles me here is the fact that it happens on Windows only (both FireFox and IE). If I run the same code on mac - no problem: files get uploaded successfully. I would really appreciate if someone could point me into the right direction to resolve this problem.