"The deposition proceeding did go forward today. It was scheduled for 9:45 to 11:45," Kaplan said. "However, it wasn't able to commence until 11:32. "You can imagine in 14 minutes there's not a lot of time to develop questions," he said.

Spears called in sick for a Dec. 12 court-ordered deposition, but was photographed that day driving with a friend. She also didn't show up for another scheduled session.

Spears, 26, and Federline, 29, have been wrangling over custody of their sons, 2-year-old Sean Preston and 1-year-old Jayden James.

Federline has temporary custody of the children because Spears has defied court orders. The two were married in October 2004 and divorced in July. Spears also does not have visitation rights at this time.