Floating problem

I have noticed two similar problems on IE7 (maybe I should have opened two issues, excuse me if I have) I think both are related to unnecessary floats

first - the primary menu will not float when in LTR and completely disappears when in RTL mode.
I think what is causing the problem here is the float of .sf-menu

second - this causes problems only when in RTL : the content-tabs go off screen and cause horizontal scrolling.
What causing it is the unnecessary float of :

#content-tabs ul.primary li,
#content-tabs ul.secondary li

and

#content-tabs ul.primary li a:link,
#content-tabs ul.primary li a:visited,
#content-tabs ul.secondary li a:link,
#content-tabs ul.secondary li a:visited

I say unnecessary because I tested without the float and all was fine.
I would have created a patch but this is just about deleting a few lines, tell me if you prefer next time I will make a patch.