Evolving..
Chris Lee made a suggestion to avoid the jumping contents of the popup:

I think it makes sense, although it might look a bit strange to have the title at bottom. But worth a thought anyway. Thanks Chris!
And yes, the expanded note shouldnt be that wide. Consider it a Gimping error
September 24th, 2004 at 11:47
Some kind of inteligency wolud be useful. I have notification area in upper panel, so popup content should be reversed — title on top, optional content lower.
September 24th, 2004 at 12:20
Nice idea not to jump the title. Or, a smooth transition should be made, probably with an animation.
Also, if originally on a top panel, should not need to put album info over title.
Now, what about putting album info on the left or on the right of the title?
September 24th, 2004 at 13:54
While I like the basic look, I think it’s not all it can be - I would use the color bar to indicate importance (so if I was away or say, totem was showing my a fullscreen movie I would only take “red” notifications, meaning people I marked important in Gossip, system security upgrades, low battery, etc) As you can hear I don’t want these messages just for rhythmbox but rather as a general interface which all programs could inform via D-BUS. The realisation hit me the other day when all this notification stuff started being debated, the notification tray serves the same purpose for a lot of shit - inform me when something happens, we could simplify our interface by doing the natural thing - having one interface to handle it all and using presence information to determine what we need to display and what we handle otherwise.
Say Totem is in fullscreen displaying a movie, I would want to deactivate the screensaver so it does bother me after a while, set myself away for unimportant people, pause Muine and so on, this would all be automatic using my profile.
September 24th, 2004 at 14:08
Yeah, I am fully intending to color code the bar on the left to mark certain types of notifications. Important ones have red etc.. The left bar also has a function to work as a hide timer for the notification, like a hourglass. Check the other blog entries of mine.
Also there is this spec being written at galago.sf.net
September 27th, 2004 at 11:37
On Mac OS X the Growl library (http://growl.info) provides quite nice notification pop-ups.
They appear below each other in user-configured corner (top right by default) and fade after a short period.
I think similar approach would probably work better than popping notifications up from the panel like they do in WinXP.
September 27th, 2004 at 17:27
Thanks for the link Henri! (and hi, long time no see since Dublin :))
October 10th, 2004 at 00:44
Hey, check out MonkeyPop -
http://mspace.berlios.de/gunther-user/view.php/page/MonkeyPop