Hmm, so if the error you are receiving now is the one at the end of file then it obviously says that some traffic is being software switched, hence the perfromance issue. Which on a 6500 is a death sentence since it is underpowered in that regard. Once you reach that state the only way to recover is to reload unfortunately. Here is a good link;
http://www.cisco.com/en/US/products/hw/switches/ps708/products_tech_note09186a00804916e0.shtml#cbharbor235 ;}