[regression] Maven checks for updates of timestamped snapshots

[INFO] snapshot org.apache.maven.shared:maven-filtering:1.0-beta-4-SNAPSHOT:
  checking for updates from apache.snapshots
[DEBUG] Reading resolution-state from:
  org\apache\maven\shared\maven-filtering\1.0-beta-4-SNAPSHOT\resolver-status.properties
[DEBUG] Writing resolution-state to: 
  org\apache\maven\shared\maven-filtering\1.0-beta-4-SNAPSHOT\resolver-status.properties
[DEBUG] Skipping update check for snapshot org.apache.maven.shared:maven-filtering:1.0-beta-4-SNAPSHOT
  (org\apache\maven\shared\maven-filtering\1.0-beta-4-SNAPSHOT\maven-metadata-central.xml)
  from central (http://repo1.maven.org/maven2)
[DEBUG] maven-filtering: resolved to version 1.0-beta-4-20091130.145343-3 from repository apache.snapshots
[DEBUG] Trying repository apache.snapshots for resolution of 
  org.apache.maven.shared:maven-filtering:pom:1.0-beta-4-SNAPSHOT
  from org/apache/maven/shared/maven-filtering/1.0-beta-4-SNAPSHOT/maven-filtering-1.0-beta-4-20091130.145343-3.pom
Downloading: http://repository.apache.org/snapshots/org/apache/maven/shared/maven-filtering/1.0-beta-4-SNAPSHOT/maven-filtering-1.0-beta-4-20091130.145343-3.pom
[DEBUG]   Artifact org.apache.maven.shared:maven-filtering:pom:1.0-beta-4-SNAPSHOT resolved to
  org\apache\maven\shared\maven-filtering\1.0-beta-4-SNAPSHOT\maven-filtering-1.0-beta-4-20091130.145343-3.pom