[Q] Always stuck at boot screen after few days that i have flashed a new rom

Hello everyone...

I always flash new roms to my GN...most of them were working fine...but some of the roms seems have some problems....

After I flashed a new rom, it always works perfectly...i can reboot/ restart and restore the apps without any problem....but few days later....it reboots automatically...and stuck at boot screen...but even i search the thread of the custom roms...seems no one got this problem....I can boot to CWM ....and i tried to fix it ....even i install the rom again...it still stuck at the boot screen....and i finally wipe the data....then it can boot normally again....then i restore my apps once again....everything return normal..........for few days only....and it stuck at boot screen again....therefore....i can only enjoy the rom for few days (maybe 3-4 days)..work perfectly for few days....but it will crash accidently without any symptom..........

Then i tried other roms...........some roms dont have this problem (mostly aokp/aosp base)...and some roms usually have this problem (non-aokp/aosp base)....after suffer this problem several times for different roms.....i just think that it may not the rom's problem..but i cant figure out why this will happen....I reli want to know is there anyone got this problem too or any method to tackle this problem...

Thx alot and sorry for my poor english....