Oh, heavens no. Some of their products are wonderful. I've been using their Terastation 1.0 for several years without issue. I have two of them on opposite ends of the house. The primary server is where I keep everything (photos, projects, "My Documents" from windows). Each night the primary server backs itself up to the secondary one.
In fact, I was planning to replace my (now full) Terastations with Linkstation Quads. But the Linkstation Quads are corrupting data. So, until Buffalo is able to fix that problem it would be a good idea to avoid that product.