On 29.12.2014, Andre Robatino wrote:
I have mozilla-adblockplus-2.6.6-1 installed in F21 (was just pushed stable in F19, F20, and F21). Firefox's Add-ons/Extensions still shows 2.6.4.
My firefox shows the correct version. A quick grep into the Fedora 21 adblockplus src.rpm does not reveal any "2.6.4" in the active code, so there must be something else which causes the behaviour you're encountering..