possibly the files were extracted to the wrong directory, where should
they be ?
On Ubuntu and any other Linux distribution updates are a pushed via
Synaptic updating system. Unless you have a specific reason to use the
download from mozilla.com you should allow Ubuntu to control the
updates. There is a bit of lag between the Mozilla release and the
update from Ubuntu being released. Generally the security fixes
included in the updates are not actively seen in the wild.
for some reason this didn't happen :-(
It is possible that your system has not picked up the updates.To
manually check "To check for updates yourself, choose System →
Administration → Update Manager and press Check"
if I cancel the 8.10 update, will it start again from where it left
off ?