My largest client has made the mistake of jumping on Navision as their catch-all Accounting/ERP/etc software, and now we are tasked with trying to integrate the line of business systems we have written for them with Navision.

What a steaming pile of (insert string of highly offensive expletives here)!

I know a few who have similar feelings - anyone who moves to Navision needs to get involved with Navision consultants as well.