Hallo,
I know there are a lot post's about checking filesize while uploading. But I have still the same problem. On remote I have a limitted upload-size of 2mb (local too). In my script I use a limit of 1 mb. If the uploaded file is between this two values everything is fine, but if the upload is larger the 2 mb, there is no file where the filesize function can gather information. I used also the hidden_field with max_file_size and a value larger than 2mb without success.
By the way I'm testing on a windows machine.