You should place your temporary files on the hard drive that does not contain your operating system. To do this in Video Studio follow the following steps.
1. From the File menu select Preferences
2. In the General tab, change the working folder to a folder on your non-OS disk.
3. Click the Preview Tab
4. Uncheck Option 1, then check Option 2 and locate a folder on your non-OS hard drive
5. Click the OK button.
Also double check that Both your hard drives are defragmented. Try this out and let me know if it resolves the problem.
COMPAQ something or other with 500Gb Boot Disk, 1Tb external Firewire Disk, 4Gb Memory and a super duper sound card, 19" TFT Monitor etc etc etc
Sony TRV33e : Sony TRV310e : Canon XM2
Sony Vegas Studio editions to v11
Remember, there is always more to learn than there is to teach.