The SF Chronicle reports that tech company Salesforce.com has put its big plans for a 2 million square foot Mission Bay campus on hold. Recently deceased architect Ricardo Legoretta was to lead the project, which would have included four colorful buildings and a large public plaza on 14 acres across from the UCSF Mission Bay  campus. The company will instead rent big blocks of space throughout the city until it decides what to do with the site. Stay tuned for more.