First, what version of WSUS are you using? Have you updated to 3.0? Second, SUS only detects not approved updated. This features does just that, detects updates to send to clients. Once you approve the updates, the clients will only receive the approved updated and not the detected updates, which would be all updates if set this as an option.
Now, i do not know where stand as far as security and infrastructure, but best rule of thumb for any updates to release any updates in a test environement or test client to be sure that the updates do not affect the test user. If everything is okay, roll out your updates. This has always saved me from major mess up...TEST, TEST, TEST. If you have your Security+, it emphasizes this rule of thumb.
Do not pray to have an easier life, pray to be a stronger man!!!
B.S. Computer Information Systems
Masters of Information Technology in Network Security
CompTIA A+, Net+, Security+
MCSE: Security
MCITP: Exchange Server 2007 (Pending)
MCITP: Server 2008 (Pending)
MCTS: Windows Vista (Pending)