[Plugin: All-In_One Event Calendar] Large Core Files generated

I’m getting very large Core files being generated (200MB+) which my website host tells me from the logs is because of All-In_One Event Calendar i.e. quote:
May 7 11:30:05 uluru suhosin[399505]: ALERT – script tried to increase memory_limit to 134217728 bytes which is above the allowed value (attacker , file ‘//public_html/wp-content/plugins/all-in-one-event-calendar/all-in-one-event-calendar.php’, line 12)
May 7 11:30:08 uluru suhosin[399589]: ALERT – script tried to increase memory_limit to 134217728 bytes which is above the allowed value (attacker , file ‘//public_html/wp-content/plugins/all-in-one-event-calendar/all-in-one-event-calendar.php’, line 12)

I’ve tried increasing the allowed memory limit to 512MB but makes no difference. Because I only have 1GB storage this keeps causing problems.

Does anyone have any clues about this?

Thanks in advance

John