N73 / PC Suite 6.82.22.0 / Restore problems

Question

I safely backed up all my phone's data via data cable before upgrading the software on my phone (again, via data cable). All went well and the software upgrade was fine.
But on restoring it only puts the multimedia data back on there. So I only have pictures/sounds etc, but no contacts, notes, calendar... I'm absolutely desperate to get this data back.
When doing the restore I have three restore options. 2 old ones from my old (6600?) phone (about 2mb each) and a large one (26mb) for my N73 - as it has a much higher quality camera the files are bigger. However, when I actually go to the folder where those update files are kept (.nfb files?) there are only the two old backup files.
But the data must be somewhere on my system as it updates all the pictures and videos perfectly.
It's also worth noting that I've tried rebooting both my phone and my PC several times but without success. And every time i turn on my phone it asks for the time and date, as if it were the first time I've ever turned it on.
System info below. Any help anyone can give would be *really* gratefully received.
Operating system:
Microsoft Windows XP
Build 2600
Service Pack 2
Language: English
Language for non-Unicode programs: English
Locale: English
Input language: English
Nokia PC Suite:
Version 6.82.22.0
Language: English
Connectivity Cable Drivers:
Not installed
PC Connectivity Solution:
Version 6.43.9.0
Bluetooth stack:
Microsoft Bluetooth stack
Version 5.1.2600
Build 2180

Answer 1

I've tried updating the contacts, notes and calendar from a previous backup in february and that seems to work. So I have most of my numbers now.
But I've lost all numbers, notes and important diary updates that I've input into my phone since february.
Also, since the phone software update it asks for time and date every time I turn it on, which is really annoying.
Any ideas?