I don't come here often to complain, as in spite of a few limitations, I've experienced few problems with my E73. But one feature that still puzzled me is Nokia's implementation of predictive text. I have been playing with it tonight and now can't believe it exists in its current form on a refined device like the E73.
First, is there a really good on-line tutorial somewhere that explains the predictive text logic in-depth? Maybe that would help. (Keep in mind the E73 is a full-keyboard phone, and most tutorials I've seen assume a numeric keypad only.) But here are my main complaints:
1) Predictive text was not designed for use in the web browser. When typing in a text field, moving up or down is supposed to supply a list of possible words...but up and down are also how you navigate out of a text field on a S60 3rd ed. phone. There are so many times when I've wanted to move the cursor/pointer but see a list of words instead. There should be a way to either disable the word list, or to make it appear through some other means.
2) Predictive text considers all punctuation the same as alphanumeric characters. When typing, it will insert the proper word, which I often want to immediately follow with a comma or a period, but this instead causes the word to truncate. I would prefer it treat all punctuation the same as a space, i.e, the end of the word. This might cause problems for words that contain punctuation, but there are relatively few of these. This would also keep snips of words out of the custom dictionary.
BTW, I found Nokia's Custom Dictionary app on the Nokia Labs site just this evening. I appreciate them making it available, but it seems I shall be using it far too regularly to remove junk. 
3) Sometimes I will see a single word suggestion floating in the window, but the suggestion is either for a capitalized word or for a word fragment. Perhaps I don't understand how this feature is meant to work, but right now it seems totally useless, and I would prefer to turn it off as well.
Any comments or suggestions are welcome.
On the E73, the Predictive Text settings look like this (* = my settings)
Word auto-completion
Off
On *
Text correction level
High
Medium *
Off
Number matches
Not shown *
Shown
Text correction mode
Show suggested word
Show test as entered *
I suspect the E71 is the same, even if the names are slightly different. All of my settings seem reasonable, so don't think changing them would alter the E73's behavior when replying to posts on this site with the Reply editor. BTW, while I can easily switch between the Full and Mobile interfaces, I've tended to use whatever the site serves me. Probably 90% of the time, the default is the Full version. Not sure if that's unusual, or why the version varies randomly.
With Predictive Text off, there is still a problem with textarea fields (but ONLY on this site!) where the caps lock can get stuck on. What appears to happen is the "capitalize first letter" feature, i.e. "Abc" in the title bar never reverts to "abc" after typing a character, the result being all caps. I can switch to lower case letters, but only one character at a time. The only "fix" is to move the cursor to a 1-line (i.e. a text input) field and type something there to trigger the change. So I don't know what the problem is, but the coding on this site appears to be triggering bug(s) in the browser.
My typical solution, though, is to use "Quick reply" instead of "Reply", which works fine.
As for telling the phone that a word is complete, the problem for me is the blocking nature of the T9 dictionary list that appears when pressing Up or Down. I am still getting used to Nokia's Predictive Text, but have just realized this list crops up everywhere there is a full screen editor. It pops up in Notes, in QuickOffice, etc. But there is another popup GUI which floats in the window and appears to suggest user dictionary words and maybe mis-spelled words, just one word at a time. I would like an option to use this interface 100%, instead of the current blocking GUI:
1) Press an alphanumeric key, and it may suggest a combined list of T9 words, user dictionary words, and correctable words. Perhaps the number of suggestions can be configurable, too, from 2-5 words. Keep typing to ignore the choices, or press Fn+Up or Fn+Dn to access the list.
2) Press a non-alphanumeric key (space, period, comma, dash, etc.) to signify a word boundary. New words longer than 3 (?) characters go in the user dictionary, optionally ignoring words that start with, or primarily containing numbers.
3) When cursoring around a docunment, the GUI from 1) still appears, perhaps after a short delay. But it would never block your input, and would float around the window and hopefully never get in your way.
The above likely isn't perfect, but I think it would be much better than the current system. The trick would be to implement it in-house and then subject it to real-world testing...which IMHO wasn't done enough for the current implementation.
But with the move to touch screens, perhaps this thread is coming too late?
Thanks for the "Text Correction Level" suggestion. I made the change, and so far don't see a major difference, but will toggle it back and forth for a couple days to experiment.
By "blocking", I meant to say that that when pressing Up or Down on a word, the T9 lists steals focus away from the cursor. You can't keep cursoring and must respond to the list. I am slowly training myself to the Nokia way of doing things, but it's still annoying.
It's possible the version of this site that appears is cookie controlled, but at the same time, my E73 seems to be logged-in permanently, through a cookie, of course. It would be odd for one cookie to keep expiring while the login cookie remains, so I am still leaning towards a bug in the web site. It's only a small inconvenience.
By "pictures folder", do you mean a directory of pictures (like camera snapshots) as seen through the File Manager? I expect the D-Pad to do something, and just remembered that it's used here to scroll around the picture, it it's either too large for the screen or if you've zoomed in. But using left and right to move through a directory of pictures does make a lot of sense. There are very few times when you have just one picture, and closing one picture only to load a new one wastes unnecessary time. I don't use the Gallery much either, as it takes a long time to load. It seems like a feature Nokia might use to advertise the phone in a video presentation, but which isn't terribly useful in practice.
Thanks for all the feedback! 
