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I ran into that problem shortly after the JB back around christmas day, soon it became several apps not just FB. I ended up having to restore my phone and re-JB it.

I blamed it on user error, i had tried to install several tweaks that were not ready for iOS7 yet.
 
My gf has this issue on her 5C however I don't on my 5. I don't think it is a JB issue as you can just read the app reviews on the App Store and see TONS of ppl are having issues with it crashing. I think it is a poorly written app and not to be contributed to JB. Someone posted that when an ad appears in your news feed it is the cause of the crash. Haven't seen this myself as I just read that tonight and her fbook app is currently stable yet it wasn't prior to reading that comment about the ads.
 
My gf has this issue on her 5C however I don't on my 5. I don't think it is a JB issue as you can just read the app reviews on the App Store and see TONS of ppl are having issues with it crashing. I think it is a poorly written app and not to be contributed to JB. Someone posted that when an ad appears in your news feed it is the cause of the crash. Haven't seen this myself as I just read that tonight and her fbook app is currently stable yet it wasn't prior to reading that comment about the ads.

I dont contribute to the Jb itself more of Activator since it is/was "beta".Though you are correct its terribly written but its way better now that its written in Objective C/C++ instead of the crappy HTML5 version it was a year and half ago
 
Ya I saw that activator was updated. Also read it was the contributor to verrrrrry slow boot times. Updated mine but just this afternoon started getting Facebook crashes. Hard reboot and has fixed it since then. The same will fix my gf's 5C for a day or two and then back to crashing on Facebook.
 
My gf has this issue on her 5C however I don't on my 5. I don't think it is a JB issue as you can just read the app reviews on the App Store and see TONS of ppl are having issues with it crashing. I think it is a poorly written app and not to be contributed to JB. Someone posted that when an ad appears in your news feed it is the cause of the crash. Haven't seen this myself as I just read that tonight and her fbook app is currently stable yet it wasn't prior to reading that comment about the ads.

Its definitely poorly written but mine was crashing every 5-10 seconds and wouldn't stay open for long.
After that I never have a single crash for 3-4 days now. Knock on wood:)
 
I randomly started getting multiple apps crashing this evening. Facebook, Dropbox, the stock camera . It was driving me insane! I was afraid I was going to have to go through the whole restore and jailbreak process again =(

It's weird because it just happened out of nowhere. I hadn't even installed anything from cydia for quite a few hours, I drove home listening to music working perfectly fine via Bluetooth and get home to check Facebook and upload some pictures to Dropbox and they both crash.

Tried respringing a few times and it didn't help at all. Rebooting with home and lock button did thankfully. I am so glad it was such an easy fix for now lol
 
Second that. My instagram was crashing like a bitch too. A reboot did the trick though. For now...
 
Facebook is broken for me. Hard reboot didn't fix it.

Don't want to delete Activator though. :(


Edit: deleted activator. Still no solution.
 
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Upon further inspection, after my weird issues with crashes and rebooting, all of my pictures in my camera roll were all jumbled and out if order. How damn annoying!
 
I ended up restoring and jail breaking my phone again.

I'm going to be a lot more careful installing tweaks from here on out.
 
Same here all of a sudden all apps were crashing. BiteSMS Facebook photos camera etc. grrrrrr something is causing this issue. I did update bigify today but it was the only update I had.
 
Me too
They said it could be due to AppSync and afc2add tweaks
I just remove them, waiting for results
 
Well it happened for me again tonight. It seems that any app that has something to do with photos or uploading photos is crashing. Facebook, Dropbox, stock camera and photos app. A reboot fixes this, but it's really annoying because every time it happens my camera roll gets all messed up and out of order. When I open it after a reboot it says "restoring" and then it's all jumbled.

I wish I could figure out what's causing it. I removed all the tweaks I installed today and yesterday and hope it stops happening. I know it's not app sync causing it for me because I do not have app sync installed. It has to be something else.
 
Well it happened for me again tonight. It seems that any app that has something to do with photos or uploading photos is crashing. Facebook, Dropbox, stock camera and photos app. A reboot fixes this, but it's really annoying because every time it happens my camera roll gets all messed up and out of order. When I open it after a reboot it says "restoring" and then it's all jumbled.

I wish I could figure out what's causing it. I removed all the tweaks I installed today and yesterday and hope it stops happening. I know it's not app sync causing it for me because I do not have app sync installed. It has to be something else.

my exact symptoms as well and i have no unsupported apps installed on my 7.0.4 IPhone 5
not sure what triggers it but a reboot will fix the issue for a while
 
In an unrelated not I notice when I turn LTE off it automatically goes back on.Anyone having this issue?
 
I have figured out the issue with my facebook (on my 5) and my g/f's 5C. I can repeat it every time. If I go into Cydia and install or update anything that forces a respring, facebook will crash unless a hard reboot of the phone is done. So it's something between respringing and facebook. Now I'm not saying this is everyone's issue, but 2 out of 2 for me, it is.
 
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