JF 1.5 Error Need Help

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This happen like 5 times and only wipe data seems to fix it,
this happen once when updating
happen once while flashing
and happen a few times doing nothing at all just listening to music

But I turn my phone on and once it gets to the part where the silver android word has a shiny light going thru it. the shine will stop at one part of the word then i see it flicker then it just keeps loading then freeze again flickers and keeps doing it over over and wont start up untill I flash it (worked once) or wipe data

I have cache on sd card with apps
but this happen few times before moving cache over

EDIT: Or as one person said to explain it easier: "Looping at the boot animation"