Tuesday, Patch Day!
Second Tuesday of the month, so Microsoft will be releasing their monthly patches today. Up on the list for June are 3 rated critical, 3 important and one moderate. As soon as they are available, apply them.
Apple released version 7.5 of their Quicktime player, fixing 5 vulnerabilities, and OpenOffice got bumped to version 2.4.1, fixing an overflow issue. Especially with the rise of third party software and plugins (such as Quicktime, Flash, ...) becoming the new method of gaining access to infect machines, you cannot delay these for too long.