My teacher machine is windows 7 32bit SP1,student machine is Windows XP 32bit SP2 , Network card is RTL8139 100Mbps . I use iTALC 2.0 . Student machine windows taskbar is disappear when I leave fullscreen demo or lockscreen. not every time and every machine disappear , about 50% probability disappear .
this problem looks more serious , have a friend submit this problem in https://sourceforge.net/tracker/index.php?func=detail&aid=3354320&group_id=132465&atid=724375
I hope you solve the problem. Thank you.