i can not access to my nas drive on lion

There is a good chance the firmware for your NAS doesn't have up-to-date firmware. You should contact the manufacturer of the NAS and see if they support Lion and what you need to do on your existing unit to have it recognized. It's common for NAS manufacturers to lag behind when new OS releases come out so you need to keep this in mind when considering a OS update.

I might be running into the same problem...

When I mount a drive using the finder's "Go / Connect to Server..." command I can choose the share to connect to and it mounts the share, puts it on the desktop etc... but then it tells me that:

"The folder “Sharename” can’t be opened because you don’t have permission to see its contents.

And the drive sits on my desktop taunting me.

But! I've found that I can access the share from the terminal. I'm not sure if you're comforatable using the terminal, but if you are, try going into the /Volumes/ folder and using cd and ls to look around your share. Let me know if it works - it's a crummy work-around, but at least we'll know if we have (maybe) the same problem.

Good luck!

OK, I'd wait until you get an answer before adding stuff to the NAS. You don't want to make your problem worse than it is.

BTW when answering a post please click Reply in the message you're replying to otherwise we can't tell who your communication is directed to.