AFP NAS not opening from finder

I have just rebuilt my iMac to 10.6.8 (I was previously on the same version but rebuilt due to ongoing hangs and crashes). I have been using a buffalo NAS drive for some time and have configured a number of AFP shares on this NAS.

These have always worked well and I have a mixture of shares that are open for guest access as well as some other that require specific credentials.

After the rebuild the NAS appears in Finder under the 'Shared' section but clicking on the NAS does nothing. It would usually try to connect, firstly with the guest account and then with another account if I chose to use the 'connect as' function, but now it just sits there and doesn't refresh the contents, but instead list the contents of whatever drive I was previously viewing.

If I browse through 'Network' and then to the drive it opens as expected, but it just won't open from the 'Shared' side menu.

Nothing has changed on the NAS recently and certainly not in between the rebuild so I am stumped as to why this doesn't open.

Under the my 'old' os I did a few extras installed, such as Fuse, but I am not sure this would make such a difference and I don't really want to install and run anything that isn't ultimately required.

Any thoughts or advice welcomed.

Paul