[Q] 3rd party apps crashing on system startup, even after a new firmware! HELP!!!

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I have a swiss 16gb I9000 running the jpu firmware (at the time). at first it worked, but then I took it out to make a call, and alot of crashed apps pop ups apeard. I can now no longer run any 3rd party apps and the phone is barly usefull.
I tried flashing over a new kernal, but that did not work so i did the next best thing: I flashed a NEW firmware (JPY) but nothing changed. It is still useless.

Has anyone encounterd this befor? or does anyone know a fix?

Best regards
Ethan j. s. Lyons

You could download rom manager and fix permissions.. That might help

edit:
Did you wipe data and wipe cache partition before flashing?
If not, run these two options in recovery mode and flash the firmware again

i cannot run any 3rd party apps.

I edited my post. Please have a look at it

yeah i will try that tomorrow when i have some more time

no luck with fixing the permisions.

did a complete factory reset etc. and my device failed to boot up. couldn't fix it so i wen't down to my provider's shop and they said they will send it to be repaired. that should take around two weeks to complete.
I would like to thank you for trying, even though it didn't work