Windows "Please Wait" on login

[zygote]

Hi,

We have TV8 (8.0.30992) deployed via group policy to around 200 computers, all running Windows 7 with all updates applied.

What we've found is that sometimes a computer will start up and then after login seems to stall with "Please Wait..." on the screen. This seems to stall indefinitely but as soon as we initiate a TV session from another computer the problem machine then continues with the login process immediately and the desktop comes up.  We've verified this multiple times, and every time a computer stalls, a connection to it with TV fixes it.

Anyone come across this issue, and if so, is there a fix?

TIA
Z