Flickr sync: how to operate it?

[pakunoda]

Sorry,
I quite don't understand how Flickr Sync works...
I have my special portfolio and collection ready to to be sync'd with Flickr but nothing happens on the website, though I do click on "Sync with [my flick share name]".

Sharing a file manually to Flickr works fine though.

Anyone knows?

[pakunoda]

Update:
I switched to another Windows user profile and it works - I get a dialog asking me how my picture should appear on Flickr.
So I guess something is wrong with my current user profile.