Their implementation periods are horrendous. Their marketing speak and sales drones make it sound like a turnkey appliance...like you just drop it in, point it to your database URLS and you're now playing with knowledge management. But in practice there's months of custom backend Java development (the entire tech stack is Java 1.6 or something horrible) to build the connectors and map the data into their backend, then months of ontology management meetings to build up the one-true-model (TM) for all your enterprise needs.

Then months and months of post deployment tweaking and continuous work to keep the system alive and fix issues when some of the data sources change schemas or something.

I've heard things like average time from purchase to full deployment is something like 9 months. But from my time dealing with them I think it's much longer.

I think they get you on the off the shelf price too..

$150k/core...say you run it on a cluster of relatively puny machines ...($150k * 4 cores) on a 4 node cluster is already above $2m.