Kath hounds? Yeah, they're everywhere and they have this annoying habit of respawning everytime you reenter the module. Great for XP...not so much on medpacks. If push comes to shove, remember that you can use rapid transit to get back to the Hawk (automatically restoring your health), however when you rapid transit back there will be more kath hounds waiting for you.
As for the lag, check out this thread
. It says "TSL" but it works for KotOR too.
Hope that helps.