Google Mistrial

The NY Times has an article about the mistrial in Judge Zloch's courtroom last week after jurors did internet research:

Last week, a juror in a big federal drug trial in Florida admitted to the judge that he had been doing research on the case on the Internet, directly violating the judge’s instructions and centuries of legal rules. But when the judge questioned the rest of the jury, he got an even bigger shock.
Eight other jurors had been doing the same thing. The federal judge, William J. Zloch, had no choice but to declare a mistrial, wasting eight weeks of work by federal prosecutors and defense lawyers.
“We were stunned,” said the defense lawyer, Peter Raben, who was told by the jury that he was on the verge of winning the case. “It’s the first time modern technology struck us in that fashion, and it hit us right over the head.”
It might be called a Google mistrial. The use of BlackBerrys and iPhones by jurors gathering and sending out information about cases is wreaking havoc on trials around the country, upending deliberations and infuriating judges.

Anything judges can do to make sure jurors don't hop on the internet, or is this going to happen in every case?