Microserver B120i Array Driver 6.8.0.64 Bluescreens 2008R2 during chkdsk

Configuration:  Stock Microserver G8 w/2GB.  Three 1TB SATA drives.  In RAID 1 or in RAID 0 config (doesn't matter).  Win2008R2 with no roles installed. 

Run chkdsk on any volume and during stage 5 of 5 (free space check), system blue screens.

*** Stop :  0x0000007E (... , ... , ... , ...)

***            libsa.sys - ...

Once system is rolled back to 6.6.2.64, system completes chkdsk routine without error.

Driver causing crash - 6.8.0.64: http://h20565.www2.hp.com/portal/site/hpsc/template.PAGE/public/psi/swdDetails/?sp4ts.oid=5387585&spf_p.tpst=swdMain&spf_p.prp_swdMain=wsrp-navigationalState%3Didx%253D%257CswItem%253DMTX_1ce4701a7cbf470091efd33f6b%257CswEnvOID%253D4064%257CitemLocale%253D%257CswLang%253D%257Cmode%253D%257Caction%253DdriverDocument&javax.portlet.begCacheTok=com.vignette.cachetoken&javax.portlet.endCacheTok=com.vignette.cachetoken

Driver that works - 6.6.2.64: 

http://h20565.www2.hp.com/portal/site/hpsc/template.PAGE/public/psi/swdDetails/?sp4ts.oid=5387585&spf_p.tpst=swdMain&spf_p.prp_swdMain=wsrp-navigationalState%3Didx%253D%257CswItem%253DMTX_9b5424c852a54e49b501e280e5%257CswEnvOID%253D4064%257CitemLocale%253D%257CswLang%253D%257Cmode%253D%257Caction%253DdriverDocument&javax.portlet.begCacheTok=com.vignette.cachetoken&javax.portlet.endCacheTok=com.vignette.cachetoken