Its the same problem described here:
http://forums.windowscentral.com/windows-8/246149-live-tiles-not-working-8-1-a.html
For me, reinstalling the apps, re-pinning the tiles, and all other sugestions are NOT working.
This, added to the problems i have experienced with IE11 (my bank page not working, ABP and avast plugins not being compatible, etc), have made me wish i had NOT "upgraded" to windows 8.1.
EDIT:
BTW, i have this live tile problem on both my laptop (ugraded to 8.1 from 8) and desktop (fresh 8.1 install via msdn RTM). My Surface RT works fine (so far) but does have the IE11 problem of not opening certain pages properly
#Start Rant
I had zero issues in windows 8. Now my "live tiles" are nothing more that useless "grafitti" taking up the entire screen.
And i cant use my surface to access my bank due to the "issues" with IE11.
Doesnt MS actually TEST stuff before releasing it!!!???
#End Rant