Twhirl on OS X refuses to remember the configuration option NOT to play sounds when new messages arrive, between restarts anyway.
My Facebook profile sometimes doesn’t load, I just get a blank page.
ecto 3 can correctly tag WordPress posts – you need to configure Blog Settings-> Templates-> Tags to put the tags in the Keywords section of the post. It then doesn’t add Technorati links to the post, but what the heck.
Quick Look in Leopard will preview a .vcf file (but, kinda oddly, not a .vcard file).
The improved stats page on the WP.com dashboard now means that I see a link to the specific day of my largest-ever number of hits, and the graph is animated, faster to draw, and works in FF3b2.