There has been a large majority of users who have reported bugs after updating to Mac OS X Lion 10.7.3. I know personally that after updating I had a hard time connecting to the Internet after my iMac would come out of sleep mode. Luckily after Apple pushed an EFI firmware update for a variety of Mac’s I noticed the Wi-Fi problems I was experiencing were gone.
To further fix issues with Mac OS X 10.7.3, according to 9to5Mac, Apple has also pushed a Supplemental Update today fixing bugs to do with Time Machine. If you use the Time Machine feature on your Mac computer then we strongly recommend updating as soon as possible.
This update is just over 24MB and can be found automatically by clicking the software update button, or can be downloaded manually by clicking here. Let us know if this update has fixed previous issues with Time Machine in the comments.