your term looks ok im using linux and konsole bash 4.2.24(2)-release

the lightning bolt is just an utf8 fancy char

this is my PS1 if you like it: \[\e[0;32m\]\u\[\e[m\] \[\e[1;34m\]\w\[\e[m\] \[\e[1;33m\]⚡\[\e[m\] \[\e[1;37m\]