The Malaysian company is the one Sekerob refers to in his latest post. Their site says they're into "grid computing" (among other things). The reason I connect them with WCG is that ProtoWall was blocking two IP:s and thus the WCG itself, so I began by excluding the IBM one from the blocklist. That didn´t help, so I excluded this Malaysian one as well, and all problems were gone. This fact, and the fact that they boast of grid technology among their interests, seem to imply some connection with WCG, although admittedly in a non-conclusive way.