devel is the most unstable repo many packages here will cause havoc to your dev. Be sure to research what you are installing. Devel repo is the slowest as it homes the most packages. You should normally have these enabledNokia Apps Nokia SSU maemo.org Community SSU Ovi PR 1.3 If you wish to have testing or devel leave them disabled at only use as required
Swappolube, Kernel Power and CSSU combined are what should be installed first IMO. BTW I have Kernel Power but don't overclock as it provides fixes and enhancements see KP wiki. I recommend Kernel Power without overclock package and this will enable Smartreflex which will make your device work most efficiently. Are you using the proposed settings in Swappolube and have you saved them? IIRC Cutetube original version is now not updated only the cutetube-QML version currently, you should use QML version for this package.