Updates:
Status: WontFix
Comment #1 on issue 253 by pekka.klarck: Press Key Native 517 failed
due to invalid key code
http://code.google.com/p/robotframework-seleniumlibrary/issues/detail?id=253
Key pressing is handled outside this library so there isn't anything we really could do to it. If I remember correctly, it is actually handled also outside Selenium itself and done fully on Java. If I, again, remember correctly, these key codes changed slightly in Windows 7 for some reason.
