I started getting this error (Error 14258: Cannot perform this operation while SQLServerAgent is starting. try again later) this morning, afterrebooting to finish installing an external drive. I have checked, and it is already in thread mode, with lightweight pooling set to 0. I ran a reconfigure in Query analyzer just to be sure, and that confirmed that lightweight pooling was already off - it returned "lightweight pooling changed from 0 to 0." Therer have been no account changes in 3 years on this server.
This is the MOM database server, and I need the extra space to back up some logs so I can do anything to keep the stupid server from running out of space - a chronic problem with this pig (MOM). Is there *any* reason installing an external drive should hose SQL?