Hello hawsink,
The flashing globe signifies that your Mac is drying to boot from a network volume and not your Mac's internal drive. It still boots up normally because once it gives up trying to access a network volume with Mac OS X installed, it tries the next one in line, which happens to be your internal hard drive.
To change this, head to *System Preferences -> StartUp Disk*, and make sure your Internal Drive with Mac OS X installed is the selected volume and not the Network volume icon. See if that helps. 😉
B-rock