<html><head></head><body bgcolor="#ffffff" text="#3d3d3d" link="#19b6ee" vlink="#3d3d3d"><div>Hey all!</div><div><br></div><div>Topic says it....I'm starting to look at doing an upgrade from 3 to 4. Any glaring surprises? Doing a transparent forward proxy with some peek/splice for content filtering only (no decryption). Has anyone gone through an upgrade, and how painful was it, if at all? Thank you.</div><div><br></div><div>James</div></body></html>