My pings seem a LOT faster with no packet loss locally...
This is only local though :-\
256K package, Helderkruin Tower
Pinging www.sentech.co.za [66.18.65.115] with 32 bytes of data:
Reply from 66.18.65.115: bytes=32 time=1331ms TTL=249
Reply from 66.18.65.115: bytes=32 time=78ms TTL=249
Reply from 66.18.65.115: bytes=32 time=77ms TTL=249
Reply from 66.18.65.115: bytes=32 time=56ms TTL=249
Reply from 66.18.65.115: bytes=32 time=55ms TTL=249
Reply from 66.18.65.115: bytes=32 time=107ms TTL=249
Reply from 66.18.65.115: bytes=32 time=113ms TTL=249
Reply from 66.18.65.115: bytes=32 time=325ms TTL=249
Reply from 66.18.65.115: bytes=32 time=170ms TTL=249
Reply from 66.18.65.115: bytes=32 time=51ms TTL=249
Reply from 66.18.65.115: bytes=32 time=111ms TTL=249
Reply from 66.18.65.115: bytes=32 time=142ms TTL=249
Reply from 66.18.65.115: bytes=32 time=68ms TTL=249
Reply from 66.18.65.115: bytes=32 time=106ms TTL=249
Reply from 66.18.65.115: bytes=32 time=136ms TTL=249
Reply from 66.18.65.115: bytes=32 time=65ms TTL=249
Reply from 66.18.65.115: bytes=32 time=104ms TTL=249
Reply from 66.18.65.115: bytes=32 time=243ms TTL=249
Reply from 66.18.65.115: bytes=32 time=103ms TTL=249
Reply from 66.18.65.115: bytes=32 time=62ms TTL=249
Reply from 66.18.65.115: bytes=32 time=61ms TTL=249
Reply from 66.18.65.115: bytes=32 time=72ms TTL=249
Reply from 66.18.65.115: bytes=32 time=80ms TTL=249
Reply from 66.18.65.115: bytes=32 time=189ms TTL=249
Reply from 66.18.65.115: bytes=32 time=58ms TTL=249
Reply from 66.18.65.115: bytes=32 time=76ms TTL=249
Reply from 66.18.65.115: bytes=32 time=131ms TTL=249
Reply from 66.18.65.115: bytes=32 time=66ms TTL=249
Reply from 66.18.65.115: bytes=32 time=74ms TTL=249
Reply from 66.18.65.115: bytes=32 time=132ms TTL=249
Reply from 66.18.65.115: bytes=32 time=126ms TTL=249
Reply from 66.18.65.115: bytes=32 time=171ms TTL=249
Reply from 66.18.65.115: bytes=32 time=120ms TTL=249
Ping statistics for 66.18.65.115:
Packets: Sent = 33, Received = 33, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 51ms, Maximum = 1331ms, Average = 147ms
And here is Intl...
Pinging www.avsim.com [205.252.249.32] with 32 bytes of data:
Reply from 205.252.249.32: bytes=32 time=2984ms TTL=234
Reply from 205.252.249.32: bytes=32 time=1900ms TTL=234
Reply from 205.252.249.32: bytes=32 time=2201ms TTL=234
Reply from 205.252.249.32: bytes=32 time=617ms TTL=234
Reply from 205.252.249.32: bytes=32 time=637ms TTL=234
Reply from 205.252.249.32: bytes=32 time=615ms TTL=234
Reply from 205.252.249.32: bytes=32 time=574ms TTL=234
Reply from 205.252.249.32: bytes=32 time=532ms TTL=234
Reply from 205.252.249.32: bytes=32 time=534ms TTL=234
Reply from 205.252.249.32: bytes=32 time=552ms TTL=234
Request timed out.
Reply from 205.252.249.32: bytes=32 time=559ms TTL=234
Reply from 205.252.249.32: bytes=32 time=623ms TTL=234
Reply from 205.252.249.32: bytes=32 time=565ms TTL=234
Reply from 205.252.249.32: bytes=32 time=637ms TTL=234
Reply from 205.252.249.32: bytes=32 time=596ms TTL=234
Reply from 205.252.249.32: bytes=32 time=596ms TTL=234
Reply from 205.252.249.32: bytes=32 time=575ms TTL=234
Reply from 205.252.249.32: bytes=32 time=577ms TTL=234
Ping statistics for 205.252.249.32:
Packets: Sent = 19, Received = 18, Lost = 1 (5% loss),
Approximate round trip times in milli-seconds:
Minimum = 532ms, Maximum = 2984ms, Average = 881ms
So the problem is most definitely with Sentech

(but we all knew that already)