ilike and utf-8

Hi,

Does the ilike operator work fine with cyrillic text put in a UTF-8
encoded database?
I've had remarks of a user (of http://myowndb.com, a web database)
with text in cyrillic that his searches are not case insensitive,
although I use the ilke operator in the code. And it works perfectly
for my data (that are not in cyrillic).

Thanks

Raph