I have an SBS 2011 box with issues seeming to revolve around WSUS or SQL. If I try to access the WSUS page from the SBS console or the WSUS mmc, it crashes every time. I also discovered that if I try to open SQL mgmt studio, it goes VERY slowly. I should also note that when this WSUS issue started, the entire box has been plagued with VERY slow performance.
This is in a virtual environment and the SBS box has plenty of resources (8 vCPUs and 12gb of ram). I am perfectly okay getting rid of WSUS from SBS if that won't break anything in SBS as I have already setup another WSUS box since this one stopped working.