kml & kmz file restrictions

[wil...@wilbru.com]

Good day i am currently using the google maps api v3 to load kml files
into my web application. The file i am currently having trouble with
is a kmz wich is 274 kb big and it will not load (Uncompressed the
file is about 8mb). If I take out elements in the file to shrink it
then i does load in my web app.

But when i use
http://maps.google.com/?q=http://myapp/kml/mykml.kmz

then the kml loads perfectly.
If someone can shed some light on this it will be greatly appreciated