It might mean there is congestion somewhere between cellar.org and you.
Try running "tracert cellar.org" in a cmd window. It will tell you roughly how long it takes to reach all the routers between you and the Cellar.
Code:
C:\>tracert cellar.org
Tracing route to cellar.org [207.245.110.178]
over a maximum of 30 hops:
1 <1 ms <1 ms <1 ms 192.168.1.1
2 6 ms 12 ms 9 ms L100.PHLAPA-VFTTP-97.verizon-gni.net [173.49.21.
1]
3 13 ms 6 ms 9 ms G0-13-0-7.PHLAPA-LCR-22.verizon-gni.net [130.81.
188.218]
4 6 ms 6 ms 7 ms ae6-0.PHIL-BB-RTR2.verizon-gni.net [130.81.199.2
10]
5 13 ms 14 ms 14 ms 0.xe-7-3-0.BR1.IAD8.ALTER.NET [152.63.3.125]
6 13 ms 14 ms 16 ms te9-2-0d0.cir1.ashburn-va.us.xo.net [206.111.0.2
01]
7 25 ms 21 ms 24 ms 207.88.14.170.ptr.us.xo.net [207.88.14.170]
8 15 ms 17 ms 17 ms ae0d0.mcr2.philadelphia-pa.us.xo.net [216.156.0.
46]
9 19 ms 19 ms 19 ms 216.156.8.154.ptr.us.xo.net [216.156.8.154]
10 20 ms 19 ms 19 ms ge11-1-3d0.mcr1.philadelphia-pa.us.xo.net [216.1
56.8.145]
11 21 ms 19 ms 19 ms 66.236.204.166.ptr.us.xo.net [66.236.204.166]
12 26 ms 23 ms 24 ms core-2-gig-vlan-500.hq.dca.net [216.158.2.5]
13 21 ms 19 ms 19 ms cellar.org [207.245.110.178]
Trace complete.