With Simple Tags 1.5.3 the most options under manage > manage tags are gone. Only “WordPress 2.3 have a small bug and can create empty terms. Remove it !” is available. No stats on the left side, no fields to rename tags, no fields to delete tags and so on.
Reinstalled Simple Tags 220.127.116.11, everything comes up again. Maybe an upgrade error?
The function “Advanced Tag Management” in Simple Tags 1.5.3 did not work under WordPress 2.5 even in a brand new installation. It’s a pity for this excellent plugin. Let’s hope Amaury will have a look at it. I can send screenshots if required.
You can have back “Advanced Tag Management” with Simple Tags 18.104.22.168, but then you can not use the features of the plugin eg. for editing a post.