my macbook is really acting up. a couple of days ago i downloaded some security updates etc, and ever since it has been really weird. random programs will crash. also, after a while, when i try to open a program, it will just jump in the dock for a while, then stop un-opened. i try to relaunch finder, but finder wont even reopen, so i reboot. it is fine after the reboot for a while.. then acts up again. i just recently did an archive and install too. i tried repairing permissions and did some cleanup with onyx, but to no avail. it 's really gay. any ideas?