Every. Single. Patch.

Every time there's a new patch the download starts like normal, gets to the very end, then never moves. This is followed by eventually having to close it, getting the "restoring an old version then patching" notice, then a loop of trying to patch. This loop can go anywhere from 2 to 1,000,000 times (theoretically obviously) before finally patching.

Is this a bug other people have or am I just unfortunate?