Sounds like you're having problems similar to me.
I've been using Yahoo Mail for many years, never had a single issue. Then about 2 months ago, all hell broke loose. Suddenly I can't use the Reply, Forward, Search, and various others buttons. I click on them, nothing happens. Basically, most any button that has an associated drop-down menu doesn't work. My Save button under prefs doesn't work either. Under IE, I can see that it's reporting errors on the webpage, something about missing Javascript objects. For some unexplained reason, these errors just won't go away. And it's not just IE, Opera and Firefox are exactly the same. So it certainly appears to be a server-side problem. But strangly I *NEVER* have these problems when accessing my Yahoo Mail account from my wife's PC! Works perfectly, every time, and always has. I'm just about at my wits end w/ Yahoo Mail. I tried someone else's suggestion about clearing the cache of old file/content, which does seem to make a difference at times. But pretty soon the problems return. And sometimes even clearing the cache doesn't help. Then every once in a while, out of the blue, these buttons and drop down menus will start working again, but usually becomes a problem agai within minutes.
As I said, I'm at my wits end. I've been scouring the 'net looking, anywhere, for others having similar problems, then I saw your post. I initially assumed this was some sort of Yahoo screw-up, perhaps they messed up the Javascript, and that it would be straightened out in a few days. But nows it's going on TWO MONTHS of this hell. I can't take it no more, and I can't find ANYONE who can explain what's going on, nor how to correct it. I'm stumped. Even retreating to image copies of my WinXP installation, images that were created long before this problem started, are experiencing the same problem. So this seems to be another indication it's server side related. But then there's my wife's PC, it NEVER has these problems. Same WinXP SP1, same apps, same everything. Nothing particularly different between our PCs that would even begin to explain why here PC seems immune.
I wish I could find someplace were everyone is clearly have the same problems as myself. But it's difficult to do since I'm not sure what's the best way to describe the problem, or what to search on. As a 20 yr software developer, I pretty much solve all my own problems. But this Yahoo Mail thing is becoming hell on earth, and I'm totally aggravated at this point that NO ONE seems to have a clue what the problem is, or a definitive answer. Even the suggestion to change the compose page from graphic to text is only a workaround (you're simply bypassing the troublesome graphic javascript, pr4esumably). Again, this is only circumventing a problem that never seems to get fixed by Yahoo. And it doesn't seem to be affecting everyone, just some people. I can't determine what's common among us unless we can all find each other first! That's half the battle here.
Sorry for the rant, but again, I'm at my wits end. The idea of now having to start all over w/ Gmail or similar, rebuilding folders, filters, etc., is something I dread. But after two months of ZERO progress, I just don't know what else to do. I even posted the problem on the microsoft.public.windowsxp.help_and_support newsgroup some time ago (those posts by Jim are *me*), got almost NO feedback, last I checked, one guy had a similar problem, or else ppl just are finding it. So I don't even know how widespread the problem is. Here's the link, if anyone's interest:
http://groups.google.co.uk/group/microsoft.public.windowsxp.help_and_support/browse_thread/thread/c904839f9065c9ca/6a3183990544f22f?q=drop+downs+not+responding&rnum=1#6a3183990544f22f
Please, someone, anyone, HEEEEEEEEEEEEEEEEEEEEEEEELP!
I recently had my computer fixed after a crash..(re-installed windows xp)..since then I have been able to access, recieve, and read my Yahoo email account, but not send anything out. I click on re, fwd, or compose and the page starts to load, gives an "error on page" at the bottom left and does not work. When I click on the yellow ! a box comes up that says:
Line: 798
char: 7
error: access is denied
code: 0
url: http://us.f127.mail.yahoo.com/ym/Compose etc...
I can insert addresses, but cannot type in the message box.
Here's the weird thing, in that same window there is a button "send e-card". when I click on that I can send out e-cards with access to my address book and everything.
I have tried changing every setting I can think of in internet options (I have internet explorer 6.0) I have downloaded Java, I have tried everything.
Any suggestions would be appreciated.
This has been going on for over a month. I know it is my computer because I can send email from other computers.

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