Konsole Scrollback problem

[RenatoLond]

Hello!

I'm using sabayon for a few months now, and lately my Konsole started to display a strange behaviour.

Every time I try to scroll the screen up, all writing get messed up. If I do it with page up and page down, the problem does not happen, but if I scroll using shift+up or by going in the up arrow, it happens.

Here are images of the problem:
http://img840.imageshack.us/i/befores.png/
http://img84.imageshack.us/i/afterxw.png/

It does not matter if I alternate windows and get back, once the problem happens, it only gets "normal" again by doing scroll up and down.

I tried to do equo libtest, and it gave me no errors. I have no more ideas. I'm running Konsole 2.5.4 and KDE 4.5.4.

[Fitzcarraldo]

I can't see any screen corruption in those screen shots. Have you pasted the wrong screen shots by mistake?

[RenatoLond]

If you look at after, you will notice that the line "SHA512 disabled" has been repeated for all the the lines, except the first and last. Also, in the column which align with the "http" on the last line, there is the original content of the lines. Which should be the package name, and mirror address.