Sounds like you need to:
1) Go to Admin Home -> Community -> General Settings (tab)
2) Check "Show user's contribution on the user information page"
3) Add the user tracker ID and field IDs (separated by commas) in the input box labelled "Display UserTracker information on the user information page:"
For instance, if the user tracker ID is 1 and you want the user information tab to show fields 1, 2, 3 and 4, you would enter: 1,1,2,3,4
This one stumped me for a while too. Hope that helps!