Merging these topics, as it looks like the same person (same IP).
Dave, are you using the default settings for time discrepancy? sv_enforcetime I think is the setting, I think. You might want to remove that from your config and use the defaults if you have it set, as speed cheats should automatically result in a kick, now.
Names used:
noname4941
hackerzV.52
noname7373
IP: 184.163.100.250 = modemcable250.100-163-184.mc.videotron.ca
Banned.