I filed a ticket about this problem.
https://code.ros.org/trac/wg-ros-pkg/ticket/4999

H.Chen

2011/1/30 Brian Gerkey <gerkey@willowgarage.com>:
> On Thu, Jan 27, 2011 at 4:48 AM, Chen Haseru <chen@jsk.t.u-tokyo.ac.jp> wrote:
>> When I test webui on iPad and check error console of Safari,
>> there are a bunch of error meessages like - Refused to get unsafe
>> header "X-JSON".
>> Actually the Web User Interface works fine now but it always makes me
>> difficult to read other console messages while debugging.
>>
>> Has anybody solved this problem?
>> I think this is a problem with Safari, but I don't know what to do.
>
> So that we don't forget about this problem, can you file a ticket?
> https://code.ros.org/trac/wg-ros-pkg/newticket?component=web_interface&type=defect&&web_interface
>
>        brian.
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