sudden strange latency on audio recordings with cubase

[nincompoop]

Hi,
for the past days my system was workin' fine until yesterday, all my recorded files are late by something like 2100 samples. I tried all possible fixes and settings. and finally had to use a record shift compensation. This is just plein weird!
The only explanation is that something has messed with the core audio driver, possibly a quicktime update or something else recently installed, and that the 002 is not communicating correctly with the mac pro anymore
any help is appreciated!

[DigiTechSupt]

Please start with the steps in the OS X Setup and General Troubleshooting sticky at the top of this forum, specifically those areas on trashing preferences, including the 'com.digidesign.coreaudiomanager.plist' preference.

[nincompoop]

Thanks Tech Support,
but I have already done that and there is no change. It just started yesterday out of the blue, things were on time before...
any other ideas?
Thanks!