Is this by design? I've looked through the docs, searched groups.google and searched bugzilla (Haven't checked source...) Can't find mention of a limit.

I should elucidate. I tried dragging from the bar, adding with the sidebar button. I then moved the folder to a top level folder and tried the same. The bookmark would go into an empty folder.

WFM on Win98SE, I got many folders with more that 30 bookmarks in them. Moz trunk build 2001092403.

Found the problem. I had a bookmark folder copied from the Imported IE Favorites. These bookmarks aren't actually imported, they are just interpreted from the IE Favorites directory. A copied folder will still point to the IE favorites directory and will not allow you to change the bookmarks, but if you copy the bookmarks 1 by 1 you will then be able to change the properties, but the bookmark will not function (i.e. it displays the favorite file.) until you change the properties. I suppose it would be nice-to-have if it would auto-import all foreign bookmarks, but right now you can't even import a directory, just a single favorite url.

we have bug 56765, bug 101174, bug 68858 marking as dupe of bug 56765 ([RFE] IE Favorites need to emulate 'real' bookmarks) *** This bug has been marked as a duplicate of 56765 ***

mass-verifying Duplicate bugs which haven't changed since 2001.12.31. set your search string in mail to "CitizenGKar" to filter out these messages.