Originally Posted by
Khamsin
That's what a regular sandbox does when a sandboxed program wants to write or modify something, but the size of the file that legit plugins have access to are fairly small and can be cloned without issue. The only ones that would cause problems are certain plugins that you intend to have access to your computer as a whole, like the kaspersky scanner, etc. although even that doesn't write, only reads.
If I can take IE and run it through Sandboxie, what's preventing Chrome (which they're writing from scratch) from doing it for a tab containing a plugin?