If you are using the RAMdisk to hold internet temps, then please note something I have just seen with Chrome. When chrome updates, it rewrites its links and shortcuts. It therefore overwrites any command line switches you have set, incl. redirecting temps to the ramdisk. Therefore, after each update, you need to add the command line switch again:
Instructions:
1./ Right click on your chrome shortcut
2./ Properties
3./ Edit Target, as follows: "C:\Documents and Settings\...\Local Settings\Application Data\Google\Chrome\Application\chrome.exe" --disk-cache-dir=z:\
Change the last part, z:\, to your ramdrive if not on Z:
Repeat. You have to do this again each time chrome updates.