Version 4.0 updates and bug fixes:

Service version 4.0.0.24

 Scheduled adsi or computer scanning keeps on running after the specified schedule.
 If you enable "refresh active directory users at night" you can lock out user accounts.
 a disconnect of lsclient causes the webserver http://127.0.0.1:9524 to crash
 service crashes with error "Attempted to read or write protected memory."
 set computers to non-active if not seen in the last X days is not always triggered.
 Optimized Device scanning processor time.
 Samba domain usernames are not gathered.

Website version 4003

 Freeware version can now search for usernames and see the last logged on computer.
 Diskspace usage is now shown on the action screen.
 User actions for usernames with commas don’t work.
 Recent changes softwareNA doesn’t display computer name.

Lsmanage.exe version 4.0.0.106

 #Purchased and #Price gets reset to the default values when you add new software to license management.
 Error: 00:00:00 in not a valid time
 Error: Unable to save IP range scanning schedule

Version 4.0 changes (major update):

All versions (including freeware):

 Completely new intuitive web interface
 Over 200 standard reports included
 Powersearch bar (search everything from one place)
 Scanning of enclosure bays (chassis)
 Multiple software license enhancements
 Full unicode support
 Rewritten scan engine and optimized database
 Multiple report alert pages and customisation
 Optional "-1" value for waittime to completely disable scanning of an item.
 Option to change the display name of the custom fields (custom1,custom2,...)
 Governer that kills long running and locked up scanning threads
 New option for lsclient /scanonip to support vpn users
 New installer that supports IIS and Lansweeper build-in webserver.
 Integrated google software search
 Numerous small enhancements and bug fixes

Premium:

 Device scanning: discover routers, printers, linux, switches, ... (snmp, ssh, http, ...)
 Windows eventlog error scanning and alert mailing
 Hardware and software change detection + history timeline
 Scheduled IP range scanning
 Alert report mailing (selected reports and alerts can be automatically mailed to configurable groups)
 Export reports to excel,csv and xml from the web interface
 Product key scanning now supports Microsoft,Adobe and plain text keys. (300+ software key locations included)
 Computer attached monitor scanning (model,manufacturer,serial number)
 Linux harddisk usage scanning
 OU scanning for active directory users
 Enhanced active directory integration
 Active directory cleanup actions
 Schedule scanning of computers and ADSI paths
 Custom user actions (reset password, unlock account,...)

Enterprise:

 Support for multiple scanning servers with different configurations

Server requirements:
 Windows 2003, 2008, XP, Vista, 7 (Windows server recommended)
 Dotnet framework 2.0 or higher
 SQL server 2000 or higher or SQLexpress (free)

Client requirements:
 Windows 2000 or higher

More information: here