UBB.threads PHP Forum Software Community Forums UBB.threads Version 7/8 Support Limit the Max size of a PM? (version 7.1.1)

In the UBB Control Panel it totals the size at @292MB for Data_length and 73MB for Index_length. (Posts =166MB and PM's=104MB) Hosting company says this is really high.

Am I missing any other way to reduce the size & efficiency of my board? Someone suggested for me to check into "Use Persistent Connections" feature. Does this help?

Thanks,
Rhaya