To help with the issue on the Headless Horseman I've created two macros. I got them off the official forums but I'm pasting them here for better access to our guildies.
Macro to turn off tooltips: /script GameTooltip.Temphide = function() GameTooltip:Hide() end; GameTooltip:SetScript("OnShow", GameTooltip.Temphide);
Macro to turn it back on: /script GameTooltip:SetScript("OnShow", GameTooltip.Show);
Just hit the off macro before you go to the Headless Horseman event and then turn it back on after you leave. Worked for me hope it works for you.
Fix for mouseover bug
Moderator:Lamas
Re: Fix for mouseover bug
As a warning: these don't always work. They haven't worked for me at all. Might be collisions with addons. I've given up on HH for now.
TEAM CLERIC: Allern, Dranei Paladin; Lothlondor, Night Elf Druid; Lelian, Human Mage; Lesasia, Human Death Knight; Lagervolk, Dwarf Hunter; Sylerissar, Night Elf Rogue; Langston, Worgen Warrior; Leanora, Gnome Priest
WE SPLIT THE PARTY: Renethal, Blood Elf Paladin
WE SPLIT THE PARTY: Renethal, Blood Elf Paladin