Blogger Sign Out

I just noticed a while ago about blogger that it redirects me to http://www.artiskool.com when I clicked the Sign Out on my blog main page. It seems that there's problem with the blogger because the exact link when I mouse over the Sign Out is http://blog.artiskool.com/logout?d=http%3A%2F%2Fwww.blogger.com%2Flogout-redirect.g%3FblogID%3D9153872125331769534 and when I clicked it it redirects me to http://www.artiskool.com/logout?d=http%3A%2F%2Fwww.blogger.com%2Flogout-redirect.g%3FblogID%3D9153872125331769534

I do not know if this is the expected behavior because the Sign out with link http://www.blogger.com/logout.g works perfectly.