This update provides support for Wireless Protected Access, a new standards-based wireless security solution developed by the Wi-Fi Alliance. WPA is intended to replace the existing Wired Equivalent Privacy (WEP) standard, offering much more robust methods of encryption and authentication and resulting in a new level of protection for customers taking advantage of the wireless features of Windows XP. For more information about this update, read Knowledge Base Article 826942.
Download: Update for Microsoft Windows XP: KB826942
View: Knowledge Base Article for This Download
NB:
-Please uninstall previous versions of sonique2 before installing.
-Note that interfaces (skins and remotes) written for older versions of sonique2 may not work as designed with this version of sonique2.
-If you have ID3LIB.DLL install issues, please let us know and run the installer again.
Updates:
-CDPlay - an 'analog' CD plugin (thanks Jerome!)
-remove from taskbar support (thanks Jerome!)
-many many bug fixes and mantis changes. skinners, check the forum for details.
-fullscreen vises and video windows now use mantis hotkeys.
-online window improvements.
-ID3 editor is now multithreaded.
-various bug fixes and tweaks.
-language and help updates.

I had the same problem until I fooled around with the settings. There was one particular check box that had to be either checked or unchecked and after I did that, I never got disconnected again.
Sorry that I don't remember the setting, but the patch should cure the connection ills.
As an FYI this is shaping up to be a critical patch for anyone who wants to use WPA. For me, it appears to have cleared up all oddities with using WPA over WEP, at least in the last few hours I've tested. Usually I've been getting random disconnects and problems within a few minutes (when using WEP the connection was fine, as a comparison).
http://support.microsoft.com/default.aspx?scid=kb;[LN];815485
KB826942 replaces KB815485
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