Following up on my own query, last night I systematically removed and
reinstalled system updates, and it looks like Lenovo Thinkvantage Toolbox
was the culprit. Uninstalled it, copying over USB returned to USB2 speeds;
reinstalled it and the speed is staying up (so far).
I've always like PC Doctor, but now I'm having second thoughts.
Now I can finish copying apps and files over to the new machine (an X201t
that arrived last Friday).
David
--------------------------------------------------
From: "David Ross" <[email protected]>
Sent: Tuesday, July 06, 2010 1:19 AM
To: <[email protected]>
Subject: [Thinkpad] [X61t/Vista] USB drives slow
The last couple of weeks I have had a dramatic slowdown in USB drive
access (including the SD port) on my X61t running Vista 64 (around
1.5MB/sec transfer instead of the expected 18+MB/s on an external HD).
This is not a hardware issue, since everything is nice and snappy in Linux
and also in Windows safe mode. It is also fast when I first boot up, the
slowdown happens around 10 seconds after boot. Is anyone else
experiencing this? The only new software on this machine in that period is
the usual set of Thinkvantage and Windows updates.
I've already tried things like deleting and reinstalling the USB and IDE
drivers.
I plan to upgrade this machine to W7 soon, which might fix whatever is
happening, but I'd like to understand the problem before I do so.
TIA, David
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