updating new install

[Norman Silverstone]

I have installed Ubuntu 9.10 from a CD, which was downloaded about 6
weeks ago, on to an Acer Aspire 3640. Everything seems to be working OK
including the wireless connection (after a little help from my friends).
I would have expected that there would have been many updates since the
CD was downloaded but, when I activate Update Manager, I am told that my
system is up to date. Is this correct or am I missing something obvious,
please?

Norman