YMMV but...
...Microsoft is aware of an issue some customers are experiencing when installing KB2670838 on certain laptop systems with hybrid graphics. We are looking into the situation and are considering blocking the update for systems that could be affected. Customers who are experiencing issues on systems that already have installed the update should consider uninstalling KB2670838.
In the near future (one assumes), Microsoft should begin offering home users (only!) no-charge support for IE10 install and uninstall issues. You also may be eligible for the support if an IE10-related issue causes your computer to crash or if IE10 does
not let you browse all sites. For now, however, you're on your own so you're best bet is to hide IE10 (*and KB2670838 IMHO*) & stick with IE9 for the time being.
[*Last Revised - 27 March 2013, 21:44 UTC*]