Hi and welcome. What do you mean, seeing them? What are you trying to see that you can't? We've had some issues with new members being able to post properly, but without more detail, we don't if something needs to be fixed and if so, what.
edit: I've actually gone back and looked at your posts. New members must have the first two posts approved as a measure to prevent spambots. However posts in Introductions/Farewells do not count towards your post count, so it probably took you longer.
In addition, some forums, such as Project Recruitment require that all posts be approved by a moderator. Those sections ask that you wait up to 3 days for approval, as we moderators are all volunteering our time and sometimes it can take a while for someone to be able to look at it.
Hopefully that helps you understand why some of your posts have not been immediately visible.