Like many others, today I updated MobileSubstrate, rebooted, and got stuck on the apple logo screen. Being the impatient man I am, I couldn't wait for the solution of that simple problem to start appearing in google's queries, so I went ahead and restored/updated:
3Gs - old bootrom - factory unocked - running 4.0 - early 4.0 iHatesn0w custom FM JB => fresh install 4.2.1 - JB w/redsn0w 0.9.6b4.
Everything went so smooth, until I checked cydia>manage>storage and found out that my "system" partition has only 10% free space! (out of the 740MB)
As soon as I started installing my cydia apps the dreaded "low memory" message started appearing
I've searched and so far haven't run into an elegant solution. Some mentioned this problem relating to limera1n's exploit with the new redsn0w employ, but without a solution. So far today, I've restored the phone 5 times hoping that it was a mistake I made during the process, but it's not.
So, yeah, HELP!!!!!!!!!!!!!!!!!