lucy24 - 11:24 pm on Apr 26, 2011 (gmt 0)
If wikipedia can be believed, the cutoff is 512 bytes, not only for MSIE but also for Google Chrome. Assuming that count is for the actual html-- mine's over 512 counting everything, but under 512 going by text alone, and Chrome displayed the custom text as intended-- you can pad it simply by throwing in a little more formatting.
Wouldn't it be nice if all MSIE Issues could be addressed so easily? :-)