My change to warpspeed was at midnight last night. The usage meter has upsated but I am still only getting 10Mbps so looks like they may have not changed the connection - or they just cant actualy provide 25Mbps. Looks like a call to TC later today.
If you guys are running an older operating system (WinXP or earlier), then you will need to increase your TCP receive window size (RWIN) to overcome being throttled by the 'bandwidth-delay product'. TCL provide a registry patch to Warpspeed users specifically for this purpose.
If you are running a modern operating system (Vista / Win7), then the dynamic-RWIN needs time to ramp-up, to which many Speedtest servers have a too-short test period to allow the dynamic window to fully open-up.
The alternative is multi-threaded TCP session, but you have to ensure the local PC and remote server supports this and actively use it, which I doubt on public Speedtest servers.
I'm not at home so I can't check, but I don't recall ever getting that sort of speed to California before. I've managed to get 7 or 8mbps to Sydney, but anything further is usually less than 4 or 5mbps. I'd be interested to know if anyone on the 10 meg plan can get over 7mbps to California.