My Firefox browser isn't remembering log in names and such. Something cookie related?

Check Tools > Options > Security.
There's a couple of password related check boxes there.

More information on the issue you are having would be good, but clearing your internet cache and enabling the above should resolve your issue.

Tried both, but to no avail. :( do you think avg could have lots to do with it? And on the bookmarks bar it only has remembered about half of the icons. What kind of information would you need?

What operating system and version of FF, would be good.

Have you updated both fully ?

The bookmarks not saving is a known issue and covered here: Bookmarks not saved - MozillaZine Knowledge Base

so I just had to update Firefox. ^^ thanks much for the help. :D

Glad it worked for you.