awallace - 2012-02-17

I've work for a school district that has a lab of 30 computers, all of which run Windows XP SP3 and iTALC 1.0.13. Most of the machines work well with iTALC, and show up without issue. However, we have 4 computers that consistently show up as Host unreachable. Of the 4, one of them was showing the screen of the computer next to it, rather than showing up as unreachable. I tried uninstalling and reinstalling, but all that did is make the host unreachable show up more consistently. Any idea what's causing this problem?