nejde uploadovat jpg v ie

co ma ie zase za problem ?
v opere a ff to je bez problemu
deje se to u vic lidi, ne jenom u me

formular:

    <form action="./index.php?inc=thumbs" method="POST" enctype="multipart/form-data">
        <td>Fotka: </td>
        <td><input type="file" name="user_fotka"></td>

        <input type="submit" value="upload">
    </form>

timhle to neprojde

    if ( $_FILES[user_fotka][type] != "image/jpeg" )
        return '<span class="red">špatný formát fotky</span>';