You should update your DVS to the latest one or test the latest rc.
On 7.3 & on 7.4 Mixvibes is doing the same problems. And on 7.2 also.
Got MSI AMD 1.6 Ghz, 2 Mb Ram, 120 GB drive.
You need to use the mediabase if you want things to be as you left them.
My mistake - i'm doing like you wrote.
Check that your user profil have admin rights.
Yes i'm having only one profile - admin.
You clearly have noise into your inputs disturbing the signal, check connections and settings.
On CD i don't have any problems.
I must check decks.
When i check everything i write what's going on.
Maybe everything will fix itself.

EDIT
I changed drivers on 3.0 & everything works fine.
Drivers where the bad ones.
