I use pFS3 and SFS , but if any of theese crash then i have no way of rescuing my stuff....so thats why backups are a good thing...
i have cahce on a smaller partision...
ib and miamidx etc is on my SYS: disk.
good luck on yer prob and i can say for sure thats its not ibrowse's fault.., its the FFS system u use, anyway.... i do recomend PFS or SFS but i might add that its not great for everyone, due to you should have a backup at all times....
IF IT CRASH ...It cRASH...unlike PFS where u can rescue stuff..