move_uploaded_file > 1MB

Hello everybody! I'm trying to upload a file using the move_uploaded_file function, everyting works fine when the files have less than 1MB but when I upload one more than this, IE returns the error The page cannot be displayed and in it's title shows Cannot find server. I alreary edit php.ini setting UPLOAD_MAX_FILESIZE to 8388608 (8M), post_max_size = 8388608 and file_uploads = On (memory_limit is 8388608 too). Someone could help me? Thanks in advance! Maurício Valente