hello, could you provide your latest few submitted crash reports? please enter about:crashes into the location bar, copy the latest few report ids from there starting with bp- & paste them here into a forum reply. this will give us a better understanding what may be triggering those crashes.

As requested here are the last few errors, incidentally all seems to be better now but would still like to know what caused it. bp-90900eba-80dd-4861-86a2-a89832150321 21/03/2015 08:33 bp-487c4088-2b5d-4804-9a37-7083c2150321 21/03/2015 08:18 bp-5892004a-8fdd-46e4-b3f5-95e442150321 21/03/2015 08:13 bp-af51bbf1-5ba0-4f1a-a39b-87a192150321 21/03/2015 08:04 bp-16497b67-1d85-490f-8efe-7ddd92150321 21/03/2015 08:03

Thanks, Jim

thanks jim, judging from these crash reports the instability was/is caused by the icloud bookmarks addon that you have installed.

Thanks a million