"Bush has opened up a double-digit lead in a second poll released after the wrap-up of the Republican National Convention. The Newsweek poll showed Bush at 52 percent, Democrat John Kerry at 41 percent and independent Ralph Nader at 3 percent.
Kerry had a 49-42 edge while Nader had 3 percent in a Newsweek poll released right after the Democratic National Convention.
The poll of 1,008 registered voters was taken Thursday and Friday and has a margin of sampling error of plus or minus 3 percentage points."
http://www.msnbc.msn.com/id/5914894
As with Time's, I wouldn't go into panic mode. Convention bumps vary in size, and more often than not have no lasting effect. I'll wait for the polls that come out a week after Labor Day before panicking.