Help voice search audio problem

[KB2]

Hello all

Thought i'd get myself a handsfree kit, and make use of the voice search functionality, but having getting following error as soon as i run the app:
AUDIO PROBLEM.
with 2 buttons "speak again" and "cancel"
speak again attempts to do something, but just pops up error again, cancel closes app

im using frojo, on uk vodafone network.

i thought i would try manually un-installing and re-installing latest version
but it wont allow me to un-install.

strangely i discovered if i run the voicesearch.apk file from system\app folder it runs perfectly?
same if i run the voicesearch.apk that i downloaded on the sdcard?
no errors at all

as soon as i run using icon in app list or holding down the search button i get error?

anyone got any ideas how i can get this working correctly?

thanks