Getting back up and running from a CM7 Nightly Update
1/ NANDROID BACKUP TO GET BACK TO WHERE YOU WERE IF YOU HAVE TO
2/ Titanium backup of all apps/data and system data
4/ Backup Titanium backup, ES File Explorer and LINK2SD apk's to SD card (Always have them there anyways!) using ES File Explorer
3/ Full wipe and install of new nightly and gapps
4/ Use CM7 File Explorer to reinstall TB, ES File, and LINK2SD
5/ Run Link2SD and relink SD Ext
6/ Turn on autolinking in settings
8/ Full titanium restore (files will auto relink to SD Ext with autolink on)
9/ Mass unlink the files you want on the Internal memory
10/ Redo your widgets on desktop
All your settings including WiFi, Google accounts, apps settings and data, System and Cyanogenmod settings will be retained.
Like I said. Pretty much all you have to redo is widgets.
Google Nexus i9250
Cyanogen Mod 10 Nightlies/DC 1200 Mhz/CWM Touch Recovery 220.127.116.11
It's Easier To Click Thanks Than Say It!