Trouble using reply & forward in my yahoo.com mail account.?

I'm still in the original yahoo and I can't reply or forward to any of my emails. This has been going on for over a week! Is Yahoo redoing some of their software and causing this problem or what? Have noticed some changes in the structure of my email accounts. It's very annoying to sit here for houirs and try to work with emails and get nowhere but to a page that says "this web page has expired"! Can anyone help me out here?

Yahoo is still having some problems at the moment. Suggested cures range from Update Adobe Flash Player and Javascript to clear IE7 cache, cookies, and browsing history. Different things seem to work for different people. It's causing attachments to not show, 999 errors where it won't let you do a particular action and some people cannot send receive delete or move mail. It's not just Vista either it's happening to some of us on XP. I have been advised to use this site to view my mail, www.mail2web.com if all else fails go back to classic mail via this link. http://us.mg1.mail.yahoo.com/dc/optout?s... click yes when asked do you want to opt out. Hope this helps.

Problems like this may happen due to a bad cache. Clear your history, temporary files (be patient) & cookies, then restart the computer and retry. This HELP link has instructions: http://help.yahoo.com/l/us/yahoo/mail/ya... .