freebits,
I have to say I'm running out of ideas I tired loading your MyHDCHList.mcl and your xmltv.xml files, I even installed korean fonts to make it look nice , I run all possible tests in xlobby (using plug-in) and outside of xlobby by creating manually tvvi and tvpi files and everything is running as it suppose to, MyHD is changing channels (by the way, OSD=on screen display, you can see it by pressing ctrl+enter or OK button on the remote in HD mode (full screen) which will show you which channel number you have - rf and virtual - if not check your config), I'm able to schedule recordings etc, etc...
Last thing I can think of is - check your config, on the VGA tab there is checkbox "Use Web EPG http://" and there is a text field next to it which should have "www.titantv.com" (no quotation marks) and of 'course checkbox should be checked.
I'm going to play with it a little bit more, but like I said I'm running on empty....