Media General ( MEG ) Wednesday trimmed its second-quarter earnings forecast, saying revenue in parts of the advertising business was weaker than expected. The Richmond Va.-based company said it now expects to earn less than 85 cents a share, compared to its April forecast of 85 cents to 90 cents a share. Media General said it is "difficult to be more precise at this time without more visibility on the month of June." The company earned 75 cents a share in the year-ago period. The consensus estimate of analysts is 89 cents a share, according to Thomson First Call. "While political advertising at our broadcast television stations and newspaper classified advertising continued their strong growth trends, May revenue in other categories were slightly lower than expected," the company said. "In publishing, we experienced another solid month for help-wanted advertising, but growth in the retail and preprint categories did not meet our targets, and national advertising continued to be soft." The company also detailed its performance in May, saying revenue for the four weeks ended May 30, was $70.5 million, compared with $65.8 million in the year-ago period. In particular, publishing revenue increased 4.8%, broadcast revenue rose 10.2% and interactive media revenue jumped 52.3%. Classified advertising revenue increased $1.2 million, or 9%, while national revenues fell 6.8% from last year. Preprint revenue rose just 1.6% and retail revenue increased 3.4%. Shares closed at $70.30 Tuesday.