Random vibrating: thunderbolt

[TrebleDiva1986]

My thunderbolt keeps vibrating every few minutes. This has been happening for about a day, ever since a bunch of apps updated. It's a short vibration, but enough to be really annoying and it even woke me up a couple of times last night.

 

[meadoel]

random vibrations

I have noticed the same thing in the past few days. The cycle is random, and it's always two short vibrations, although the gap between them is as much as 3 seconds.

Got any idea what app?

 

[euroxyz]

i also have it...scrabble/wordfued notifications?

 

[meadoel]

No... Groupon. I found the clue in another forum, removed Groupon and it stopped! dancedroid

Groupon was recently updated to... so it made sense.