[TYPO3] html tags in FE

[Peter Krauzer]

since two days i try to figure out why typo3 4.2 displays html tags in the
frontend. instead of headline i see the coresponding html tags <h3> becomes
&lt;h3&gt;

my ts is quite simple

page = PAGE
page.typeNum = 0

page.10 = CONTENT
page.10.table = tt_content

any idea what might we wrong?