... in Standard (AJAXy) mode, only in Basic HTML mode, where Reply/ Forward dialog opens up with browse button already present. This has been going on for a couple of days now but, as with John Gilmore's Internet wisdom [http://en.wikiquote.org/wiki/John_Gilmore], Gmail, too, has been designed to route around (be they own) obstacles.

Hardware/software: Mac OS X 10.5.6 / Safari 3.2.1

[linkfix ~ hebbet]

Try checking "Basic attachment features" in settings and see if that works.

"Advanced attachment features" requires working flash plugin, "basic features" uses basic technologies built into your browser.

Pls, fix the above link, I posted it correctly, but BG robot choked on leading and trailing angle and square brackets:

http://en.wikiquote.org/wiki/John_Gilmore

Working fine with Chrome 2 and Firefox 3

Ludwik Trammer had the right idea, thanks. Works now. In a sense it is silly that a feature of this miniscule weight should depend on presence of some third-party component at run time (if at all, it ought to detect Flash, and adapt to its absence when reply window created).

<< it ought to detect Flash, and adapt to its absence when reply window created >>

It actually does this. Try disabling Flash and Gmail will use the basic uploader.

That's what I did, disabled Flash, but the uploader didn't respond. After changing in the Settings to "Basic attachment features – Attach one file at a time and don't show progress bars," it stared to work again.