Not just me, heaps of people had the same issues. Nothing wrong with my Macbook which is a 2012 model. In the time I've had Mavericks, It had the motherboard and Harddrive replaced, neither of which fixed anything. I clean install at least once a year, and I've clean installed Mavericks more times than I would have liked. Experienced similar problems over multiple Macs, 2 iMacs (2010,2012), MacBooks (2008,2011,2012) and Mac Minis, and numbers of friends and family who have also upgraded to Mavericks.
My finder is still crashing each time I click 'Show all in finder' and scroll, cover view in finder stuffs up all the time, Safari crashes regularly etc etc. I'm glad Maavericks has been good for you but its been train wreck for a heap of people. Mountain Lion was not, and Lion was not either. Lion was a little slow at the time, but it was sped up and it was NOT as buggy (At least for me).
Luckily Yosemite seems far better with this, far less lag and stupid issues.