When I type o followed by a slash, it renders as o with a slash through it.
Every time I type the letter o followed by a slash, it renders as an o with a slash through it, o/, like the Danish letter.
This happened
Every time Firefox opened
== After I upgraded to Firefox 3 for Mac OS X 10.4.11
ప్రత్యుత్తరాలన్నీ (1)
Sounds that you use a font that supports ligatures. See /forum/1/398806 - Characters followed by a slash don't display properly.