From the update notes:
Resolved an "out of memory" message when resuming some virtual machines.
Resolved an intermittent printing problem when using Mac OS X Lion.
Addressed an issue with copy and paste on newer Linux distributions.
Fixed accessing files on shared folders using short names.
Numerous Mac OS X compatibility improvements, including Developer ID.
Resolved a power-off issue in Windows 2000.
Updated version of McAfee VirusScan.