I’m having the same problems:
# The last run didn’t finish! Maybe you can raise the memory or time limit for PHP scripts. Learn more
# The last known memory usage of the script was 29.75MB, the limit of your server is 90M.
# The last known execution time of the script was 45.81 seconds, the limit of your server is 120 seconds.
# The script stopped around post number 12018 (+/- 100)
