to explain things a bit: the only thing the client does is grabbing images from c:/gc/gc. To do that in IE you have to added GC to the trusted sites list. But that`s a security issue - if it can get files from c:/gc/gc it can get any file. And, for instance, sent it back to some server. Ok, that`s not what i expect gc to do, it`s still a security issue nevertheless.
So, ignore client OR add gc to trusted sites OR use my mod - it just keeps files in a special directory and it is the only directory that is accessible.