Thanks for the clarification. I've been on these forums a lot, and I haven't heard of any problems with focusing with that camera. I also googled for that, and nothing came up either. Maybe you read something from someone that gave you that idea. A lot of people that first start using a DSLR camera make mistakes with them all the time, or occasionally there is a defective camera.
Also the focusing of the camera also depends on the lens used. For example, a lot of us really like the inexpensive Zuiko 70-300mm lens. But it does hunt at times, but that's not a problem with the camera, but a limitation of the lens. It will hunt, for example, if you are taking a picture of a flock of birds flying in the air, and you miss the birds with the autofocus, then the camera tries to lock on some detail on the empty sky and goes back and forth trying to find something. With almost nothing there other than maybe a few wispy clouds, that seems reasonable for me for the lens to hunt like that. I've just gotten better with my aim, so I put the responsibility on me to be a better photographer. See my photo of flying geese that I took a few days ago and posted here to illustrate this some.
The Olympus E-620 got a "highly recommended" rating from Dpreview's review. It has been very popular and has been highly recommended by many people here on these forums too. If you are new to this type of camera, give it some time...there's a learning curve with these. I admit myself many times, that I'm still learning too, even though I've been using these for about two years. But the rewards are very high for those that are patient.
I hope that helps.
A little edit: About the menu...I would expect it's similar to my Olympus E-510. They are not complicated at all. You just click the menu button and you have these choices on the left, and then sub-choices on the right side. You just go through them. There's the manual and on-line instructions that can further help. And if anyone has trouble with this, they can always ask on these forums. How many people have trouble with the menu? Well, it doesn't seem to be a common problem with anyone here. It's just too simple...like anything you had to get used to it...just spend some time with it.