My masternode (solaris-qt 2.0.1.0) are crashing a lot recently

solaris-qt: malloc.c:2406: sysmalloc: Assertion `(old_top == initial_top (av) && old_size == 0) || ((unsigned long) (old_size) >= MINSIZE && prev_inuse (old_top) && ((unsigned long) old_end & (pagesize - 1)) == 0)' failed.


any suggestions ?

thx