At me a similar problem.
I have notebook with processor I5 430. After installation of last driver turbo boost technology has ceased to work boost monitor. Earlier the blue line appeared sometimes even without loading of appendices, now the line has absolutely ceased to rise. With what it can be connected?
Sounds like either the system is idle and has clocked down in speed step mode to save power, or your install is not working?
I believe the monitor also has a averaging setting (but i could be thinking ablut the wrong software) that lets you select how often it updates.
Since the processor can go from Speed Step (~ 1/2 rated speed) to full turbo boost and back hundreds of times a second, a longer averaging period may result in a more steady bar that does not seem to move.
CPUID Tmonitor display turbo boost a little differently http://www.cpuid.com/softwares/tmonitor.html