Tikkeus

Yep, that was it. Thanks for help. Still a mystery though, how did it happen to be changed (no possible candidates for "somebody") and why on the nexus only. Bah, not important.

Smth with the font size. The letters have suddenly reduced to the size 3 or 4. Can't read anything. Not sure if its nexus or my comp, but anyway, haven't encountered such problem anywhere else. Any advice?