2) Bad configuration, AdBlock enabled, firewall ad blocking or similar. I can see google adsense in both pages.
3) View -> Home -> Start with last session, or rigth click over Home button in toolbar and select 'Start with last session' option in context menu.
4) Profiles subfolder in K-Meleon folder, if you have profile.ini file in K-Meleon folder.
[Profile]
path=Profiles
isrelative=1
K-Meleon in Spanish