The record will switch when a web request is made. That is by software design and is normal. I use 3 machines as a "web server system". FileMaker Pro Server, and then unlimited as a guest of that to respond to web request... and then I develop on another machine with a regular FM5 client installed. FMP Server is far more reliable, and you never see "rebuilding databases" or the "files were not closed properly" error, and never the dreaded "please rebuild these files" errors! FMServer also makes backups a sinch.
You can do everything in "development", field defining, and layout mode, from a