Bad Vista, Bad!!

I was pretty confident with my English knowledge. I think people always seem to understand me and I think I almost always  understood what they wanted from me. This confidence was recently shaken by Seattle times article  "A first look at Vista, good and bad". Can you help me with logic here? I am having hard times to understand why these are bad.

THE BAD

Security

It's vastly improved, but at times that's going to make the software frustrating to use. It could be especially frustrating shortly after Vista is released, if other software companies haven't updated their applications to work smoothly with Vista's more restrictive settings.

A cornerstone of Vista's security is User Account Control. What this does is make it easier to run the system in a restricted mode. Users in restricted mode don't have authority to do things like download new programs. This prevents attacks from taking over a PC. When users want to change settings or download a program, a window pops up and asks if the user wants to invoke administrative privileges and proceed.

The system can also ask for the administrator password, so children can't override parental controls, for instance.

Microsoft has been fine-tuning the system to minimize the pop-up privilege requests, but this feature is likely to interrupt users more than they'd like. It's probably a small price to pay for improved security.