Some hints regarding the challenge:
If you receive "Login failed, invalid username or password." this means that your reply has been timed out.
Regarding the last part (the challenge is a 3 part ), it looks like that in case of some tools, time zones matters. I have created this challenge in CET/CEST timezone. If you still can't get the right solution, please contact me.
For the token code challenge, a hint:
779286 - from Fri Jul 27 14:23:00 2012 to Fri Jul 27 14:23:59 2012
XXXXX - from Fri Jul 27 14:24:00 2012 to Fri Jul 27 14:24:59 2012 ---> this is the solution
440866 - from Fri Jul 27 14:25:00 2012 to Fri Jul 27 14:25:59 2012
GreetZ and happy challenging