I often find the reverse problem. My parents run at 800x600 with large fonts. There are a lot of web sights that assume there is at least 1024x768 and cram in horribly at that size.
A good design should be flexible enough to work over a large range* of sizes. If you do it right, your site should be OK at anything from 800x600 to 2400x1800.
The problem is that a lot of web designers came from a traditional paper graphic design background. They are used to designing for a fixed page size, and adjusting to flexible sizes eludes them.
That is how you end up seeing sites using advanced CSS to control layout and size but just use that to fix the pixel placement of fonts and graphics.
The one I find amusing is sites that specify fonts by name, but it's actually some purchased art font.
Jay
* I'm not one of the CSS design fanatics that thinks you can design one page to look the perfect on everything from hand held phones to high resolution multi-screen configurations.