Loved the comment about stick in the muds :)
I started using Mosaic (circa 1994), then moved on to Netscape Navigator before arriving at Netscape Communicator which I still use today for web, email and RSS feeds - my email archive goes back to 1996. Netscape Communicator morphed into Mozilla Suite before morphing into today's SeaMonkey.
Over that time I've moved OS from Windows NT -> Windows 2000 -> FreeBSD.
I hate to imagine what I'll do if/when SeaMonkey bites the dust.