Like the title says, I updated to 10.9.1 and it sent my MacBook Pro (13" Early 2011 i5 16GB RAM 1333MHz) into a Kernel Panic and/or Kernel Trap which resulted in my system being stuck in a boot loop!
While I'm already dealing with another issue regarding Mavericks on my laptop this was the last thing I needed to happen! What I ultimately tried was booting into Safe Mode (hold down Shift immediately after you hear the boot chime), and clear out my ~/Library LaunchAgents folder and my /Library LaunchAgents and LaunchDaemons folders. While it knocked my computer out of the boot loop, it didn't solve my other issue.
Anyone have any ideas why 10.9.1 would cause a boot loop?
Just wanted to share this info with anyone in case they're concerned about upgrading to 10.9.1.
Pro, OS X Mavericks (10.9), 13" Early 2011 i5 16GB RAM 1333MHz