Yes I still have the issue, I can make regular calls etc all fine from the mobile.
Just to confirm the problem is as follows. I have voice messages notice on phone, I call the voice messaging service, when promoted I enter my pin followed by hash key. Line goes silent for approx 15 seconds, then have message saying thank you for calling VM message and call terminates.
I hope you can fix this soon as I will have to disable my VM tomorrow so people do not assume I'm getting their messages.