Version:            (using KDE KDE 3.5.0)
Installed from:    Compiled From Sources
Compiler:          gcc (GCC) 3.3.6 
OS:                Linux

Todo list example:

Item1
 +-Subitem1
 +-Subitem2
Item2
Item3

Resulting Page:

Item1
Item2
Item3

Subitem1
Subitem2
Subitem1
Subitem2
Subitem1
Subitem2

When using the "Export Web Page" function in korganizer while embedded in kontact, the output looks like the result above.

If I start korganizer directly and export to web, the tasklist is generated correctly; only listing subitems once.

Also, if I start kontact with the argument --module=todoplugin, the output is also generated correctly. My kontact is setup to start with the summary page.

I've poked around in the libkcal/htmlexport.cpp code to try to figure out what goes on and from what I can see, the problem is related to (around line 366):

Incidence::List relations = (*it)->relations();

Calling relations.count() returns "6" when korganizer is embedded in kontact, and "2" when it's run directly.

I have, however, been unable to figure out how the relations function works.