We have just received an information from our datacenter operator, Softlayer, about their backbone network upgrade on Sunday, 26. Sep at 6.00 - 10.00 AM GMT. There might be temporary network issues that could affect availability of Wikidot, so please be aware of it.

Here is the original message for more details:

SoftLayer Scheduled Maintenance - Short Notice [09/26/2010]
Date: Sunday, September 26, 2010 (09/26/2010)
Start time (GMT+00:00): 06:00 AM
End time (GMT+00:00): 10:00 AM
Services affected: Public Network / Backbone
Location: WDC01
Duration: 4 hours

• Short Notice Maintenance *

SoftLayer Engineers will be conducting maintenance on the transport network that provides connectivity between the WDC01 datacenter and the Equinix facility in Ashburn. During this window, Engineers will be migrating a number of transport circuits from existing gear to new dark fiber gear. Once complete, this new system will allow SoftLayer to scale capacity between these sites from the existing 60 Gbps limit to well over 800 Gbps if required.
The following services will be impacted during this maintenance:
- Public network connectivity for the WDC01 facility
- Public / Private connectivity to other SoftLayer facilities from the WDC01 facility
During this maintenance, Engineers will make every effort to mitigate the impact to customer traffic; however, customers are likely to see routing anomalies, packet-loss, and increased latency.

Softlayer engeneers have proven more than once they are real experts in their field, so I believe the upgrade will be smooth and without major issues.

Update

As far as we know, there were not reported problems with Wikidot during the maintenance window. However we experienced some problems afterwards, i.e. on Monday night from 0:00 AM to 1:15 AM GMT. The problems are resolved now and our network is working well.