How to delete a thread/post

[quiksilver]

I can't delete my posts and/or threads. I could do it previously (say, about a year ago), but I can't anymore.

I have read the FAQ, which says to click the Edit button, but there is no Edit button on my screen. I have tried Firefox and Safari on Mac OS X and Firefox and Internet Explorer on Windows XP, and it doesn't seem to make any difference - there is still no Edit button to click and no way that I can see to edit/delete my posts/threads. I note that my posting rules indicate that I can edit my posts.

Can anyone tell me how to do this?

Thanks.

[quiksilver]

Ironically, the elusive Edit button DOES appear in the post shown in this thread. The place where I want to edit my posts is in the Classifieds section, and there, I have no Edit button.

[VitaminG]

there's a time limit on how long you have to edit a post. So while that window is open, you'll have the edit function. Even so, I still don't seem to be able to delete posts.