On Sunday 16 August 2015 19:49:05 andre_debian@... wrote:
> On Sunday 16 August 2015 20:36:01 office@... wrote:
> > Am Sonntag, 16. August 2015 schrieb andre_debian@...:
> > > Yes, with all applications :
> > > kmail, iceweasel (all web browser), kedit...,
> > > impossible to resize.
> >
> > Do you mean "impossile to resize with right mouse button" or "impossible
> > to resize with left mouse button"? LMB resize works for me, but RMB has
> > never worked (or maybe I've never tried)
> > Nik
>
> When it worked => left button,
>
> and now, no resizing  left and right buttons.

Have you checked the mouse?  Does it resize windows on another computer?  
Alternatively, have you tried another mouse on this computer?

Lisi