Game downloaded from EU Store
Firmware 2.41
Custom Soundtrack On
40gb PAL region PS3
(Original HDD replaced with Western Digital 250gb)
Motion control pitch only

Rapier time trial on Sol 2 in Campaign Mode, on first lap when sideshifting across the second speed pad, turbo symbol faded out and disapeared, and turbo was unavailable for rest of first lap. This kept repeating itself on race restarts. Going back to the grid and reloading cured the problem for the next race, but it returned periodically after that. This also happened periodically on a Moa Therma Flash TT in racebox.

I have also seen a tournament points bug, with the same configuration as above, but this has already been noted:

original post discussing tournament points bug