The appearance of the EPiServer CMS tool bar will be changed quite a bit before the Release Candidate and this is included in that change. It personally took me about 4-5 weeks before I got a >50% hit rate on the actual new admin button ;) and the team is aware of this problem.
EPiServer Development Team
I have worked with EPiServer 6 new interaface this weekend and I do not know how many times I clicked on View mode instead of Admin mode button.
Please, CHANGE the new nice View Mode icon in EPiServer 6 that looks like the icon for Admin mode in EPiServer 5.
Show your support and reply to this post if you also get confused like me!