GoogleMap figure not shown after IE7 update

[Symptom] after applying IE7 security update
Cumulative Security Update for Internet Explorer 7 for Windows XP (KB969897),
GoogleMap 's figure become 'x'

[Configuration] WinXP SP3, limited user account

[病徵] 更新IE7 Cumulative Security Update for Internet Explorer 7 for Windows XP (KB969897) 後
GoogleMap 只剩文字顯示 圖形的部分都不見了

[try] use administrator to log on, visit GoogleMap, works normally.
Promote the limited user account to administrator and it works.