Lion asking for password to delete trash or overwrite files

I just upgraded to Lion and am finding problems that didn't exist before! I am a 3d animator and artist. Everytime I want to delete the trash it asks for a password. When I try to over write a file from after effects it gives an error and can't over write the file. This is due to the above problem. The same is true for rendering over another movie file. Pro Tools doesn't work. Things seem to work faster but rendering seems to have slowed down.

When updating the OS give an option to ask for the password for deleting trash...don't just have it on all the time:)

I should have waited.....eeeer....******.

Slade