JacoGR: have you tried wikitude and sky map yet? I got them from the developers - amazing apps huh?
Have not tried Wikitude, but love the Sky map. ShopSavvy is also amazing (need some local stores) and then there are so many toys, i.e. compas, metal detector, etc. Having load of fun.
Where did you get the rom? I will problably get my Magic in a week or 2
XDA forum - the link is is a previous post. For the Dream I used the JF UK ROM.
What instructions did you follow for the upgrade? I tried to upgrade mine with the following instructions
http://www.androidandme.com/2009/05...or-rooting-your-android-g1-to-install-cupcake
but it fails with "Model ID incorrect"
I tried to unsuccessfully root the phone. If you just try the "update.zip" trick it fails with "verification failed". However... You can boot a "recovery.img" using fastboot. Once inside this recovery boot, you can upgrade the ROM. In my case I first upgraded the radio and then the JF 1.51 UK ROM.
(Well, that is the order you are supposed to do things in, I first updated the ROM and then the Radio - this fastboot thing caught me by surprise when it started working, I thought it would fail like all the other attempts.)
Prereq:
1. Fastboot executable (available for Win, Mac & Linux, I used the Mac version)
2. recovery.img
3. Updated Radio as required by ROM
4. Desired ROM
Short Steps: (Other HOWTOS will describe them in great detail, this is just the parts without "gaining root")
a. Copy radio to SD - named "update.zip"
b. Boot using "Power + Camera" button
c. Select fastboot
d. Connect USB and fastboot "fastboot boot recovery.img"
e. Alt+L & Alt+S & Reboot
f. Copy new ROM to SD - named update.zip
g. Repeat b to e above
h. Hope for the best - the first boot to the new modified android screen takes forever, I thought I killed the phone
If you brick the phone, you are on your own.

And you will probably void your guarantee here...
PS: Before doing the upgrade, you should probably make a backup of the current firmware with nandroid. I didn't - as I mentioned, the thing started working unexpectedly, so I wasn't quite prepared
PPS: The above I did on my MTN HTC Dream, YYMV with the Magic. (Originally wanted a Magic, Vodaworld didn't have them in stock last Saturday, so I got a Dream from MTN on Sunday)
PPPS: Having the market and apps available really transforms the phone. Both MTN and Vodacom are screwing us here with their "default setup".