The issue of corporate signs was explosive in Cambridge two years ago, and may explode again at a meeting Wednesday after Microsoft turned in a giant plasma screen display over the weekend in Kendall Square.

The three parking garages in University Park had nowhere near 42 percent of their spaces free during a weekday afternoon visit, and the mass transit claims of developer Forest City also don’t seem to hold up, calling into question its assurances underpinning the construction of commercial space near Central Square.