Sometimes i get one of those, too (latest dev binary 1.70, RHEL5, GoFX5200).
Before things get FUBAR (all memory is allocated, everything is painfully slow) i usually get several of:
2007-12-10 22:30:09.728 oolite[3763] [unclassified.MyOpenGLView]: Creating a n
ew surface of 1440x900
Memory leaks also, some diagnostics
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