Microsoft Data Mining: Integrated Business Intelligence for e-Commerce and Knowledge Management

http://www.ncc.up.pt/liacc/ML/statlog/datasets.html
Statlog was a European project that assessed machine learning methods.
The Statlog data sets are as follows:
http://kdd.ics.uci.edu/
The UCI Knowledge Discovery in Databases Archive is an online repository of large data sets that encompasses a wide variety of data types, analysis tasks, and application areas. The primary role of this repository is to enable researchers in knowledge discovery and data mining to scale existing and future data analysis algorithms to very large and complex data sets.
This repository is currently under construction and is still in a preliminary form. This work is supported by a grant from the Information and Data Management Program at the National Science Foundation and is intended to extend the current UCI Machine Learning Database Repository by several orders of magnitude.
In addition to storing data and description files, the repository also archives task files that describe a specific analysis, such as clustering or regression, for the data sets stored. The call for data sets lists typical data types and tasks of interest.
This file contains nine sets of sanitized user data drawn from the command histories of eight UNIX computer users at Purdue over the course of up to two years.