ReadyBoost eats up memory on my flash-drive?

[methosmen]

I have a Kingston Voyager 2GB flash-drive which I use for ReadyBoost.
Problem is that memory keep disappearing from the drive. I initially
set ReadyBoost to use 1.5GB to keep me happy and smiling with my very
improved computer (do I sense sarcasm?). Anyway, it only uses approx
800MB now and still the drive is completely full.. There is no other
files on the drive so I guess the remaining 1.2GB have disappeared?
Ive checked for hidden files and there is none.

This happened once before and I solved it then by re-formatting the
drive and start over with ReadyBoost.. But since it now have happened
again I guess thats no permanent solution.

Any thoughts?

 

[AJR]

Isn't that the purpose of ReadyBoost?

Following from the Vista Resource Kit:

ReadyBoost files are encrypted and not accessible other than through
Superfetch.

Performance increase depends primarily on two factors - the Windows
Experience Index of the HD - HD with an index of 5 or better will not
benefit - usually laptops have a lower index and do benefit.

Other factor is type of disk read - sequential reads are faster via the HD
than ReadyBoost - ReadyBoost non-sequential reads improve prformance.