Index: t3lib/cache/backend/class.t3lib_cache_backend_dbbackend.php
===================================================================
--- t3lib/cache/backend/class.t3lib_cache_backend_dbbackend.php	(revision 5385)
+++ t3lib/cache/backend/class.t3lib_cache_backend_dbbackend.php	(working copy)
@@ -93,7 +93,7 @@
 			'content',
 			$this->cacheTable,
 			'identifier = ' . $GLOBALS['TYPO3_DB']->fullQuoteStr($entryIdentifier, $this->cacheTable) . ' '
-				. 'AND ((crdate + lifetime) >= ' . time() . ' OR lifetime = 0)'
+				. 'AND (crdate + lifetime >= ' . time() . ' OR lifetime = 0)'
 		);
 
 		if (count($cacheEntries) == 1) {
@@ -117,7 +117,7 @@
 			'content',
 			$this->cacheTable,
 			'identifier = ' . $GLOBALS['TYPO3_DB']->fullQuoteStr($entryIdentifier, $this->cacheTable) . ' '
-				. 'AND (crdate + lifetime) >= ' . time()
+				. 'AND crdate + lifetime >= ' . time()
 		);
 
 		if (count($cacheEntries) == 1) {
@@ -163,7 +163,7 @@
 		$cacheEntryIdentifierRows = $GLOBALS['TYPO3_DB']->exec_SELECTgetRows(
 			'identifier',
 			$this->cacheTable,
-			$this->getListQueryForTag($tag) . ' AND ((crdate + lifetime) >= ' . time() . ' OR lifetime = 0)'
+			$this->getListQueryForTag($tag) . ' AND (crdate + lifetime >= ' . time() . ' OR lifetime = 0)'
 		);
 
 		foreach ($cacheEntryIdentifierRows as $cacheEntryIdentifierRow) {
@@ -188,7 +188,7 @@
 		foreach ($tags as $tag) {
 			$whereClause[] = $this->getListQueryForTag($tag);
 		}
-		$whereClause[] = '((crdate + lifetime) >= ' . time() . ' OR lifetime = 0)';
+		$whereClause[] = '(crdate + lifetime >= ' . time() . ' OR lifetime = 0)';
 
 		$cacheEntryIdentifierRows = $GLOBALS['TYPO3_DB']->exec_SELECTgetRows(
 			'identifier',
@@ -248,7 +248,7 @@
 	public function collectGarbage() {
 		$GLOBALS['TYPO3_DB']->exec_DELETEquery(
 			$this->cacheTable,
-			'(crdate + lifetime) < ' . time()
+			'crdate + lifetime < ' . time()
 		);
 	}
 
@@ -321,4 +321,4 @@
 	include_once($TYPO3_CONF_VARS[TYPO3_MODE]['XCLASS']['t3lib/cache/backend/class.t3lib_cache_backend_dbbackend.php']);
 }
 
-?>
\ No newline at end of file
+?>
Index: t3lib/class.t3lib_sqlparser.php
===================================================================
--- t3lib/class.t3lib_sqlparser.php	(revision 5385)
+++ t3lib/class.t3lib_sqlparser.php	(working copy)
@@ -905,8 +905,17 @@
 					// Find "modifyer", eg. "NOT or !"
 				$stack[$level][$pnt[$level]]['modifier'] = trim($this->nextPart($parseString,'^(!|NOT[[:space:]]+)'));
 
+					// Support calculated value only for:
+					// - "&" (boolean AND)
+					// - "+" (addition)
+					// - "-" (substraction)
+					// - "*" (multiplication)
+					// - "/" (division)
+					// - "%" (modulo)
+				$calcOperators = '&|\+|-|\*|\/|%';
+
 					// Fieldname:
-				if ($fieldName = $this->nextPart($parseString,'^([[:alnum:]._]+)([[:space:]]+|&|<=|>=|<|>|=|!=|IS)'))	{
+				if ($fieldName = $this->nextPart($parseString, '^([[:alnum:]._]+)([[:space:]]+|' . $calcOperators . '|<=|>=|<|>|=|!=|IS)')) {
 
 						// Parse field name into field and table:
 					$tableField = explode('.',$fieldName,2);
@@ -921,8 +930,8 @@
 					return $this->parseError('No field name found as expected in parseWhereClause()',$parseString);
 				}
 
-					// See if the value is calculated. Support only for "&" (boolean AND) at the moment:
-				$stack[$level][$pnt[$level]]['calc'] = $this->nextPart($parseString,'^(&)');
+					// See if the value is calculated:
+				$stack[$level][$pnt[$level]]['calc'] = $this->nextPart($parseString, '^(' . $calcOperators . ')');
 				if (strlen($stack[$level][$pnt[$level]]['calc']))	{
 						// Finding value for calculation:
 					$stack[$level][$pnt[$level]]['calc_value'] = $this->getValue($parseString);
@@ -953,8 +962,10 @@
 				}
 
 					// Detecting the operator for the next level:
-				$op = $this->nextPart($parseString,'^(AND[[:space:]]+NOT|OR[[:space:]]+NOT|AND|OR)(\(|[[:space:]]+)');
-				if ($op)	{
+				$op = $this->nextPart($parseString, '^(AND[[:space:]]+NOT|&&[[:space:]]+NOT|OR[[:space:]]+NOT|OR[[:space:]]+NOT|\|\|[[:space:]]+NOT|AND|&&|OR|\|\|)(\(|[[:space:]]+)');
+				if ($op) {
+						// Normalize boolean operator
+					$op = str_replace(array('&&', '||'), array('AND', 'OR'), $op);
 					$stack[$level][$pnt[$level]]['operator'] = $op;
 				} elseif (strlen($parseString))	{
 
@@ -1741,4 +1752,4 @@
 	include_once($TYPO3_CONF_VARS[TYPO3_MODE]['XCLASS']['t3lib/class.t3lib_sqlparser.php']);
 }
 
-?>
\ No newline at end of file
+?>
Index: typo3/sysext/dbal/class.ux_t3lib_sqlparser.php
===================================================================
--- typo3/sysext/dbal/class.ux_t3lib_sqlparser.php	(revision 5385)
+++ typo3/sysext/dbal/class.ux_t3lib_sqlparser.php	(working copy)
@@ -302,8 +302,13 @@
 	/**
 	 * Implodes an array of WHERE clause configuration into a WHERE clause.
 	 *
-	 * DBAL-specific: The only(!) handled "calc" operator supported by parseWhereClause() is the bitwise
-	 * logical and (&), and only this one is supported here!
+	 * DBAL-specific: The only(!) handled "calc" operators supported by parseWhereClause() are:
+	 * - the bitwise logical and (&)
+	 * - the addition (+)
+	 * - the substraction (-)
+	 * - the multiplication (*)
+	 * - the division (/)
+	 * - the modulo (%)
 	 *
 	 * @param	array		WHERE clause configuration
 	 * @return	string		WHERE clause as string.
@@ -334,7 +339,7 @@
 							$output.=' '.trim($v['modifier']).' ';
 
 							// DBAL-specific: Set calculation, if any:
-							if ($v['calc'] && $functionMapping)	{
+							if ($v['calc'] === '&' && $functionMapping) {
 								switch(true) {
 									case $GLOBALS['TYPO3_DB']->runningADOdbDriver('oci8'):
 											// Oracle only knows BITAND(x,y) - sigh
@@ -387,4 +392,4 @@
 	include_once($TYPO3_CONF_VARS[TYPO3_MODE]['XCLASS']['ext/dbal/class.ux_t3lib_sqlparser.php']);
 }
 
-?>
\ No newline at end of file
+?>