Galaxy 10.1 Display Time Out

[Susan Dennick]

For the last week, I am unable to get the Display (Settings) to time out for more than 30 seconds. If I check one of the other times, it appears for a few seconds in the Settings, but then reverts back to the 30 seconds. Any ideas? If it was the computer, I'd suspect a virus. If it is one, any suggestions for a malware app?