Can anyone reply to messages from Yahoo Mail on an N800? Once I open a message I can select the word Reply but can't actually reply to a messaage, or forward one for that matter. I have used Opera and Yahoo Mail many times from Linux proper without a similar problem.

I just tried that on my N800. The reply button works... For me, Yahoo Mail is in german. That should be the only difference. Do you use the new mail beta or the old-school Yahoo Mail?

The newer version of Yahoo Mail doesn't work under Opera, I thought, so I'm using the classical version.

Huh? OK, now I remember...when i bought my n800 I tried yahoo Mail and got the message to switch to the old version, so I have the old version, too. I did forget it.
Have you tried minimo?

I believe I'm using the newer version.What I saw was yahoo button (reply, delete, etc) would hilight but not activate. I found that after selecting reply pressing the square button in the middle of the navigation pad acts as the mouse click. It isn't necessary on every yahoo mail page.
Give it a try hopefully it will work for you.

For whatever reason the reply button only works for mee when i zoom in. If Idon't zoom then I'm taken to the Attach screen.