Bug 215985 [Markers] Description column not sorting text
Currently the description column in the problems view is sorting by severity but not comparing Strings of equal severity.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/views/markers/MarkerEntry.java
return (CollationKey) collationKeys.get(attribute);
		String attributeValue = getAttributeValue(attribute, defaultValue);
		if (attributeValue.length() == 0)
			return MarkerSupportInternalUtilities.EMPTY_COLLATION_KEY;
		CollationKey key = Collator.getInstance().getCollationKey(
				attributeValue);
		collationKeys.put(attribute, key);
		return key;
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.ui.provisional.views.markers.MarkerItem#getConcreteRepresentative()
	 */
	public MarkerEntry getConcreteRepresentative() {
		return this;
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.ui.internal.provisional.views.markers.MarkerItem#getCreationTime()
	 */
	public long getCreationTime() {
		try {
			return marker.getCreationTime();
		} catch (CoreException e) {
			MarkerSupportInternalUtilities.handle(e);
			return -1;
		}
	}