Xorg often taking a lot of CPU, whole system slow

[scar]

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Dotan Cohen @ 01/18/2010 01:53 AM:
> Often, my Kubuntu 9.10 system slows to a crawl. When this happens,
> Xorg is usually the culprit:

i've noticed this on my 9.04 system also.  it only happens when i decide
to send an e-mail through Tor in thunderbird.  if anyone has used Tor
before, it is rather slow.  so, sending an e-mail can take up to 30
seconds.  after i click the send button, Xorg maxes out the CPU.  once
the e-mail gets sent, CPU returns back to normal.
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