Blender 2.49a is out!!
The first 2.49 update is available HERE and there is a lot of bugs fixed in it (see release notes HERE).
I myself installed it and tried to follow the nice sculpting tutorial from Anfeo. I never used grease pencil before and think it is quite useful, however it seems that when I make a viewport “fullscreen” by hitting “ctrl + Up arrow” the proportion of the grease changes, I don’t know if it was meant to behave that way.