Index: /trunk/src/org/openstreetmap/josm/data/imagery/WmsCache.java
===================================================================
--- /trunk/src/org/openstreetmap/josm/data/imagery/WmsCache.java	(revision 4076)
+++ /trunk/src/org/openstreetmap/josm/data/imagery/WmsCache.java	(revision 4077)
@@ -531,5 +531,5 @@
     }
 
-    public void setAreaToCache(Set<ProjectionBounds> areaToCache) {
+    public synchronized void setAreaToCache(Set<ProjectionBounds> areaToCache) {
         this.areaToCache = areaToCache;
         Iterator<CacheEntry> it = memoryCache.keySet().iterator();
@@ -540,7 +540,3 @@
         }
     }
-
-    public Set<ProjectionBounds> getAreaToCache() {
-        return areaToCache;
-    }
 }