happy 2011, ie9 beta and exchange 2010, and firefox

happy new year,

I just checked my out of office messages,

ah, dear, ie9 beta got a problem with the exchange 2010 owa on my notebook, it cannot open the options. thus I cannot check the oof messages.

then I fired up mozilla firefox, firefox worked with the owa as expected.

in both cases, it wont show any oof messages being sent even if i got a few messages over the period.