[otrs] after installing packages there's no Admin icon in menu

Hello, I have installed an OTRS 2.2.1 ver and than added additional features like FAQ, Statistics, WebMail [actually I added all packages]. The instalation process finished witout any errors. The problem is that after I log on with username who belongs to Administrators group I don't have access to Admin icon and I can't change anything in OTRS. I tried with the second user also belonging to Administrators group and there's the same problem. No Admin icon. Any ideas, I don't want to reinstall everything... Thanx in advance, Maciej