Lost wireless - Wicd

1. It occurred that I lost the ability to connect wirelessly on my work network. I tried different combinations but it just didn't work. Finally I googled and found that there is a program called Wicd. It doesn't work with network-manager and network-manager-applet or something. So when I installed Wicd on my laptop I managed without any problem connect to the work network but installation Wicd uninstalls network-manager and network-manager-something. Anyway, now I can again connect to my network.