I also use an Atom netbook and found browsing via Mozilla version 19 to be
much faster when disabling most JavaScript via NoScript and RequestPolicy
(LibreJS didn't work when I tried it - it was too CPU intensive).
For Youtube I use either SMPlayer or youtube-dl. youtube-dl can fetch the
link without downloading when using "-g" so you can copy the link into your
favorite video player (it is best to download the unencumbered format
vp8/webm - for this run youtube-dl with "-F" then run with youtube-dl with
the code for webm resolution you desire, e.g. "-f 43").
Lightspark I usually disable and only enable briefly when needed. I use
UnPlug to get video URLs on some other websites, e.g BBC news, and it usually
works without Lightspark but does sometimes require running some JavaScript.
Maybe these suggestions will improve Orca's performance enough to make it
usable?
