Dear Hans, dear Khaled,

It seems that the xits fonts does not work anymore with the recent versions (at least since 2010-09-18): the integral signs are not properly scaled and the square root behaves strangely: minimal example below (and the resulting PDF, with ConTeXt  ver: 2010.09.22 12:33 MKIV  fmt: 2010.9.22  int: english/english, on Mac OS X 10.6.3):

Best regards: OK

%%% begin bug-xits-sqrt.tex
\setupbodyfont[xits]

\starttext
Note that $\int_{0}^{2\pi} \sin(x)dx = 0$, while
\startformula
\int_{0}^{2\pi} \sin^2(x)dx = \pi \qquad \mbox{and}\qquad \sqrt{4}= 2.
\stopformula
\stoptext
%%% end bug-xits-sqrt.tex