I don't know how best to explain this. I use urxvt and when I hold down a key e.g. c, i get a long line of c's but instaed of wrapping to the next line it wraps to the same line and overwrites. This also causes hideous problems when i scroll up through the bash history.
It happens in regular terminals/VT and xterm.
However, it does seems to wrap correctly eventually - almost as if it thinks the terminal is wider than it is and only wraps after a while
I have a similar issue. I can reproduce it like this:
1) Open a terminal (rxvt, urxvt...) in 80x25 mode.
2) Type 'man pacman' (or use anything that uses less).
3) Resize terminal to full screen size.
4) Quit less.
5) Whee... now the command line wraps on itself at column 80.
If I resize the terminal back to 80x25, the problem disappears.
This happens also with aterm. As sh__ pointed out, it happens when the terminal is resized. I usually change the size of the terminal and problem disappear.
I have the exact opposite on occasion - where I pacman -Syu and I get one line per character change of the progress bar (so I end up with a few hundred lines and a nice little triangle).
This is a window manager issue, actually, and it has to do with not honoring the stupid increment handling these windows are wont to do - that is alot of terminals tell the WM "only resize me in 12 pixel increments so I can display this font right" - it's dumb, because the app should handle that internally, but they don't... some window managers do not honor increments and thus the internal app gets confused.... messing with the resize usually fixes it
I had this problem before. Turned out it was a bad PS1 variable.
This is a window manager issue, actually, and it has to do with not honoring the stupid increment handling these windows are wont to do
Same in xfce, fvwm and fluxbox for me
I've had this problem on my LFS system and on Arch - both in Konsole and in the normal terminals (Ctrl+alt+f2 type terminals). It seems to happen frequently to me, but I can't pin down an actual cause for this behaviour. In any case, it's more prevalent than many people might think, and it certainly isn't limited to Arch ....