We recently updated EM to 6.4 and SC to 6.3.1.  After doing this we found that it takes about 5 minutes to launch the v-center client (ver. 5.1).  If we disable the Compellent plug-in the v-center client comes up in seconds as it usually does.  We have been using v-center 5.1 with the Compellent plug-in for a long time without any problem up until now.  We were using the 1.5.2 plug-in so we tried updating to the 1.5.3 version to see if that would fix the issue but no luck.  Anyone ever seen this before and/or have any suggestions?  Thanks!  Mike