安装了品牌空间，发生Warning: Invalid argument supplied for foreach() ，求助

http://jpwoo.com/brand/index.php
有时会出现有时又正常，很不稳定，为什么？求高手解难。

Warning: Invalid argument supplied for foreach() in /virtual/waywinwin/public_html/jpwoo.com/brand/source/class/brand.class.php on line 206

Warning: Invalid argument supplied for foreach() in /virtual/waywinwin/public_html/jpwoo.com/brand/goodsearch.php on line 82

Warning: Invalid argument supplied for foreach() in /virtual/waywinwin/public_html/jpwoo.com/brand/goodsearch.php on line 96
http://jpwoo.com/brand/index.php
有时会出现有时又正常，很不稳定，为什么？求高手解难。

Warning: Invalid argument supplied for foreach() in /virtual/waywinwin/public_html/jpwoo.com/brand/source/class/brand.class.php on line 206

Warning: Invalid argument supplied for foreach() in /virtual/waywinwin/public_html/jpwoo.com/brand/groupbuy.php on line 71

Warning: Invalid argument supplied for foreach() in /virtual/waywinwin/public_html/jpwoo.com/brand/groupbuy.php on line 91

Warning: Invalid argument supplied for foreach() in /virtual/waywinwin/public_html/jpwoo.com/brand/source/class/brand.class.php on line 206
是这一行有问题吗？该怎么改？求高手指点。
foreach($_SBLOCK['sitenotice'] as $value) {

地址打不开呢...

这个服务器的IP在国内又被封了？又要换服务器。