Linksys adapters seem to have the most incompatibiltiy with Vista. I have D-Link fortunately. But here's a disclaimer from Linksys in regards to Vista:
Linksys will provide support for Microsoft Vista platforms for selected products beginning January 30, 2007. The list of supported products will be published on that day.
For existing products, driver or firmware updates may be required. While there may be challenges with an upgrade process, this is a necessary step to assure that the highest level of quality and full compatibility with the platform are met. We are committed to support Windows Vista and have been coordinating closely with Microsoft to make the necessary changes.
Will all Linksys products be supported by Windows VISTA?
No, only selected products will be supported.
Which Linksys products are supported by Windows VISTA?
A list of all supported products will be published and made available on our web site on Jan 30, 2007, the time when Windows VISTA will be released by Microsoft.
If a product is supported by Windows VISTA, do I need a driver?
Some products may need an updated driver, but some may not. We will release a list of all supported products on Jan 30, 2007 when more details can be found for each product.
Where can I find those drivers/firmware?
If the product is supported and needs a driver/firmware, we will make those drivers/firmware available on our support site under the "download" section.
Where will this list be published?
The list of supported products will be published on our support web site www.linksys.com/support