Figured I'd share this with everyone. I've fixed the canon status monitor to work with new versions of CUPS. (the job-state was moved to a job attribute and required an additional query to obtain).
You need to obtain the source for the status monitor from cnijfilter-common-(version).src.rpm.
Then, in cnijfilter-common-(version)/cngpijmon/src/, do the following:

1. edit bjcupsmon_common.h and change
Code:
//#define STR_SHARE_DIRECTORY_NAME	"/usr/local/share"
#define STR_SHARE_DIRECTORY_NAME	PACKAGE_DATA_DIR
to
Code:
#define STR_SHARE_DIRECTORY_NAME	"/usr/local/share/cngpijmon"
//#define STR_SHARE_DIRECTORY_NAME	PACKAGE_DATA_DIR
2. Edit bjcupsmon_cups.c and add the following code right before the getJobID function:

Code:
PRIVATE gchar * getJobState(gchar *pDestName, gchar *pURI, gchar *pServerName, ipp_jstate_t *pJobState, gchar *pJobUserName)
{
/*** Parameters start ***/
	http_t			*pHTTP;									// Pointer to HTTP connection.
	ipp_t			*pRequest,								// Pointer to CUPS IPP request.
					*pResponse;								// Pointer to CUPS IPP response.
	ipp_attribute_t	*pAttribute;							// Pointer to CUPS attributes.
	cups_lang_t		*pLanguage;								// Pointer to language.
//	ipp_jstate_t	jobState = 0;							// Job state.
//	gint			jobID = 0;								// Job ID.
//	gchar			*pJobUserName = NULL;					// User name of print job.
	uid_t			userID;									// User ID.
	struct passwd	*pPasswd;								// Pointer to password structure.
	gint			retVal = ID_ERR_PRINT_JOB_NOT_EXIST;	// Return value.
/*** Parameters end ***/
	
	// Get login name.
	userID = getuid();
	pPasswd = getpwuid(userID);
	
	// CUPS http connect.
	if ((pHTTP = httpConnectEncrypt(pServerName, ippPort(), cupsEncryption())) == NULL) {
		retVal = ID_ERR_CUPS_API_FAILED;
	}
	else {
		pRequest = ippNew();
		
		pRequest->request.op.operation_id = IPP_GET_JOB_ATTRIBUTES;
		pRequest->request.op.request_id   = 1;
		
		pLanguage = bjcupsLangDefault();	// cupsLangDefault() -> bjcupsLangDefault() for cups-1.1.19
		
		ippAddString(pRequest, IPP_TAG_OPERATION, IPP_TAG_CHARSET, "attributes-charset", NULL, cupsLangEncoding(pLanguage));
		ippAddString(pRequest, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE, "attributes-natural-language", NULL, pLanguage->language);
		ippAddString(pRequest, IPP_TAG_OPERATION, IPP_TAG_URI, "job-uri", NULL, pURI);
		
		if ((pResponse = cupsDoRequest(pHTTP, pRequest, "/")) != NULL) {
			if (pResponse->request.status.status_code > IPP_OK_CONFLICT) {
				retVal = ID_ERR_CUPS_API_FAILED;
			}
			else {
				pAttribute = pResponse->attrs;

				while (pAttribute != NULL) {
					while (pAttribute != NULL && pAttribute->group_tag != IPP_TAG_JOB) {
						pAttribute = pAttribute->next;
					}
					if (pAttribute == NULL) {
						break;
					}
					
					while (pAttribute != NULL && pAttribute->group_tag == IPP_TAG_JOB) {
						if (strcmp(pAttribute->name, "job-state") == 0 && pAttribute->value_tag == IPP_TAG_ENUM) {
							*pJobState = (ipp_jstate_t)pAttribute->values[0].integer;
						}
						if (strcmp(pAttribute->name, "job-originating-user-name") == 0 && pAttribute->value_tag == IPP_TAG_NAME) {
							//pJobUserName = pAttribute->values[0].string.text;
							pJobUserName=malloc(20*sizeof(gchar));
							strncpy(pJobUserName,pAttribute->values[0].string.text,19);
							pJobUserName[19]='\0';
							
						}
						pAttribute = pAttribute->next;
					}
					if (pAttribute != NULL)
						pAttribute = pAttribute->next;
				}
			}
			
			ippDelete(pResponse);
		}
		else {
			retVal = ID_ERR_CUPS_API_FAILED;
		}
		
		cupsLangFree(pLanguage);
		httpClose(pHTTP);
	}
	

	return(pJobUserName);
}// End getJobID
Finally, in the getJobID function, find:
Code:
						if (strcmp(pAttribute->name, "job-id") == 0 && pAttribute->value_tag == IPP_TAG_INTEGER) {
							jobID = pAttribute->values[0].integer;
						}
						if (strcmp(pAttribute->name, "job-state") == 0 && pAttribute->value_tag == IPP_TAG_ENUM) {
							jobState = (ipp_jstate_t)pAttribute->values[0].integer;
						}
						if (strcmp(pAttribute->name, "job-originating-user-name") == 0 && pAttribute->value_tag == IPP_TAG_NAME) {
							pJobUserName = pAttribute->values[0].string.text;
						}
and change to

Code:
						if (strcmp(pAttribute->name, "job-id") == 0 && pAttribute->value_tag == IPP_TAG_INTEGER) {
							jobID = pAttribute->values[0].integer;
						}
						if (strcmp(pAttribute->name, "job-uri") == 0 && pAttribute->value_tag == IPP_TAG_URI) {
							pJobUserName=getJobState(pDestName,pAttribute->values[0].string.text,pServerName,&jobState,pJobUserName);
						}
Compile, make install, and you're done! (you'll need to install gtk-1.2 and libxml devel libraries.).
Run your status monitor with
Code:
cngpijmon <printername>
See my previous thread for how to enable status readback within cups for your printer.