Latest Pro Tools 7.1 cs9 DAE issue

[robopat]

Hi

I have just installed Pro Tools LE 7.1 cs9. This causes an intermittant problem when using the DAE with other applications....White noise and no audio.....Grr....Annoying....

I am going to go back to 7.1 cs7 as the DAE is stable.....

Do I need to uninstall completely? Then install 7.1, then 7.1 cs7???

Any help would be most appreciated....

[robopat]

I have now reinstalled 7.1 cs7 and the noise problem is there constantly now....

It is a big problem as I switch to other applications all the time and use the DAE for audio output.....

Can I reinstall the DAE?????

Help...