The quite per­fect modem/router? Hard to say.

Prob­lem: Con­nected, turned on…no net­work con­nec­tion.
Solu­tion: after some tries (hours of tries), using the same set­tings of the old modem i man­aged to let i connect.

Prob­lem: Turned on wifi, surfed with­out prob­lems using my ipod touch, turned of the wifi…a wifi led (that with the lap­top and the wifi icon) remains on , i tried to turn it off from the user inter­face with­out success…

Tem­po­rary Solu­tion: reboot; updated: the prob­lem hap­pens when i turn off the wifi con­nec­tion with­out dis­con­nect­ing the client.

Prob­lem: no client dhcp shown; solu­tion: wait wait wait…some client appears, but not all.

Prob­lem: firmware update not avail­able
Solu­tion: go to www.belkin.co.uk and search to down­load the 1.00.23 (the modem searches into belkin.com which has an older version)

UPDATE: http://en-uk-support.belkin.com/app/answers/detail/a_id/2785/p/4703 FIRMWARE 1.0.25 pre release ver­sion avail­able. It fixes:

• an updated ADSL dri­ver that improves ADSL sync speed on cer­tain lines
• a prob­lem with hav­ing more than 4 MAC addresses in the MAC address fil­ter is solved
• a prob­lem with very long pre-shared keys for WPA secu­rity is solved
• a prob­lem with for­ward­ing port 80 and using Remote Man­age­ment at the same time has been solved

IMPORTANT: REBOOT YOUR MODEM AND DO A RESET OF THE CONFIGURATION

Prob­lem: unable to mount exter­nal usb device on Mac OS Leopard/Snow Leop­ard using STORAGE MANAGER APPLICATION;
Solu­tion: call cen­ter anwered: ““we know, and the eng. are work­ing on it.
FIX I FOUND: con­nect using GO->CONNECT TO SERVER->smb://192.168.2.1/public

Prob­lem: dis­able fire­wall: no inter­net connection,

Solu­tion: re-confirm the pppoe/other wan con­nec­tion settings.

SERIOUS Prob­lem (for who use FTPs): ftp clients when brows­ing fold­ers with MANY FILES on some servers gives time­out.

UPDATE: i spent about over an hour with some­one of Belkin try­ing to fix this prob­lem, when test­ing i dis­cov­ered that ftp works when using play Fire­fox calls (ftp:// in the address bar) but using Filezilla, Dreamweaver, and other appli­ca­tions fails.

Sniff­ing using Wire­shark i detected that some pack­ages when they request the cur­rent folder list use the same com­mand (PWD) while another, CYBERDUCK for Mac, which works, uses another . The prob­lem is due to which mode , binary or ACII, is used when request­ing the folder list, so only in the Open Source soft­ware you will be able to change this behav­iour and fix, in Dreamweaver this isn’t allowed.

Solu­tion: use another FTP client, i tried dis­abling the fire­wall, tried putting the pc on the DMZ. The help-desk sug­gest chang­ing MTU from 14XX to 1500 (it causes pack­ets seg­men­ta­tion but they didn’t know when i told them).

UPDATE: sniff­ing again and again with wire­shark I dis­cov­ered that the prob­lems are due to the PASV com­mand, when con­nect­ing in pasv mode (this com­mand is called by LIST, PWD and other com­mands) the router doesn’t man­age prop­erly (time­out) the sec­ond con­nec­tion (the first one is on port 21  for default) when using LIST AND OTHER COMMANDS.

The con­nec­tion works prop­erly when the client sends a EPSV or a STAT (that ton’tt use PASV) .