As a resource for California class action defense attorneys, we provide weekly, unofficial summaries of the legal categories for new class action lawsuits filed in California state and federal courts in the Los Angeles, San Francisco, San Jose, Sacramento, San Diego, San Mateo, Oakland/Alameda and Orange County areas. We include only those categories that include 10% or more of the class action filings during the relevant time frame. This report covers the time period from March 4 – 10, 2011, during which time a record 98 class actions were filed in these courts. The California Supreme Court’s recent Song-Beverly opinion continues to fuel the filing of lawsuits, and this past week a stunning 43 new class actions were filed alleging violations of Song-Beverly, representing 44% of the total number of new class actions filed during this reporting period. The only other categories to break the 10% threshold involved class actions alleging labor law claims with 21 new class actions (21% of the total number of new class actions filed) and violations of California’s Unfair Competition Law (UCL), which includes false advertising claims, with 17 new filings (17% of the total number of new class actions filed).