It's great to be able to install fonts this way, through the application installer.

However, to display Khmer correctly the OS has to know when to change the order of glyphs from the order they were entered in.

For instance, many vowels appear in front of the consonant(s) that are pronounced before them. Maemo does not know what to do with them and displays them incorrectly. With some SouthEast Asian languages, the amount of substitution and re-ordering is small and simply getting the letters on the screen works most of the time. But not with Khmer.