Crackberries

Sounds about right and the figures are probably higher in the U.S.

From The Telegraph (UK)...

Britons' refusal to turn off their Blackberrys or mobile phones means they are effectively working an extra 10 days a year, a survey suggests.

The study found that a fifth of UK workers keep their phones on over the weekend.

Men find it the hardest to switch off with only a third turning off their phones and BlackBerrys when they leave the office, compared to over half of women.