Some of these conferencing packages sometimes have problems printing from some of the machines. Printing problems were the only problems I have experienced. Server down None except for when the servers appear to be down. That the server is down. The servers are down or too slow.
Servers are down sometimes.
However, with FC most of the questions arise with file transferring. Basic file transfers. Don't know 6. They have incorrect URLs. Many students don't remember, write down, or bring with them the address of their class page.