Every vendor makes UI mistakes but usually the guys at Google are pretty spot on. Unfortunately their recent idea, to put tabs down the left hand side of the iGoogle interface backfired pretty badly and the forums at Google are still buzzing over the problem.
Funnily enough, I asked nicely and after a little while (a couple of weeks), my iGoogle page reverted to normal. I thought that Google had stopped the "experiment" but apparently it's still continuing for some people. In fact, worse; there rumours that it's about to start up again.
If you're one of the people affected, you might want to have a look at this;
Someone has gotten so frustrated with the whole thing that they've created a GreaseMonkey script to fix it.
If anyone from Google is reading; The fact that people are starting to write their own scripts to fix a UI issue is as good an indication as any that the changes are unwanted. Perhaps you could make them optional?