This is an excellent user info block for phpnuke. There are many userinfo blocks out there but personally i think this is the best. You can customize any info by editing the block file. It will show these following info in the block:

Features:
1) User Name/ID at the top
2) Login/ Logout light button
3) Login/logout box
4) Private messages (read and unread)
5) Membeship status of the site (how many today, how many yesterday and total members)
6) Latest members info
7) Total people online with their IP(guest)
8) Most people online ever (total, members. guest)
9) Total hits (daily, average, total)
10) Download status (total files, total catagories, files downloaded, data sent)
11) phpnuke info (prpnuke version, active stuff, active topics, active stories, total FAQ, total reviews, total forum posts, total topics)
12) Server info (time, date, timezone)