Ok it's common:
1.) msn is sometimes slow are showing people as offline
2.) a plugin could effect it or skin
3.) I tried closing msn and trying again and that sometimes works.
4.) it goes off and on for me
the new msn is delvering messerges not right becuase johy always sees my e-mail addrees at the end of my messesges and the other day i could not recieve any at all and i did'nt notice