The changes made for Armour HUD v2.3a have now been backported to a new version, 2.2g, for Minecraft r1.2.5. Download it from the first post to (hopefully) fix issues with rendering triangles instead of rectangles.
Thank you! The triangles have been annoying me since I found out about this add-on. 
EDIT: I'm not sure if this is purposely, but when I take Nano helm off the HUD disappears.
Armour HUD has been given a slight tweak to v2.3a which should fix triangles being displayed instead of squares (I hate you, Tessellator.class) and which also finally saves the HUD position when you change it in-game with the keybind. I should be able to backport the changes to MC r1.2.5 if it is so desired (you still on 1.2.5, Dukat863?).
There's also an experimental version of Armour HUD for Minecraft r1.4.2 which is basically just recompiling v2.3a after changing all instances of [itemstack].getItemNameandInformation().get(0) to [itemstack].getItemName(). I haven't tested it (the machine with 1.4 on is elsewhere, so it was compiled using SSH). Also, I have no idea whether it'll work on versions newer than 1.4.2 - do Mojang change their obfuscation for minor version updates? Grab v2.4 from this post and test it out...
Could you backport the 1.2.5 version for me?
