Sorenstam has only dropped one shot in her two rounds so far
R2 LEADERBOARD:-11 A Sorenstam (Swe)-6 K Webb (Aus)-5 T Elosgui Mayor (Sp), S Sandolo (It), T Johnson (Eng)
World number one Annika Sorenstam stretched her lead to five shots at the halfway stage of the Dubai Ladies Masters thanks to a second-round 68.
The Swede birdied five of her opening 15 holes before dropping her first shot of the tournament at the eighth - her 17th hole.
Australia's Karrie Webb, ranked third in the world, also shot 68 to move into second place on six under.
England's Trish Johnson is in a three-way tie for third on five under.
Johnson had the best round of the day - a 67 - with a strong back nine of 32 which included three birdies in a row from the turn.
But she is still chasing Sorenstam, who marked the end of her round by going on a camel-riding trip in the desert.
"I'm really pleased to be 11 under at halfway, I played really well, especially getting to the turn in four under," she said.
"On the back nine, I just couldn't really get anything going. But just one bogey in 36 holes is pretty satisfying."
Yorkshire 17-year-old Kiran Matharu followed her opening 68 with a 73 and is still inside the top 10 on three under par.

Faldo will turn 50 in 2007Nick Faldo has taken a major step towards retirement by accepting a job with American television network CBS.
The 49-year-old Briton, who has won six majors, will become the network's lead golf analyst, replacing former US PGA Tour regular Lanny Wadkins.
"I view this as a fabulous opportunity for me, which may come once every 10 years," said Faldo. "But it will seriously curtail my playing career.
"My playing days aren't completely over but my priority now is given to CBS."
Faldo's decision means he will miss next year's Masters, an event he has won three times.
His other three major wins came in The Open.
CBS has signed a six-year contract with the US PGA Tour and will broadcast 21 events from 2007.