I'm in an environment where profile space is a premium, and most users have "frozen" machines, meaning that on restart, the C: drive is returned to its original state. Cached Exchange Mode sounds interesting to me, but I'm wondering if we can take advantage of it without causing other issues.
Where in the file system does the cached data get stored? Is it in the profile? A temp folder? Is the cached file secured in some way to keep others from seeing it?