The problem seems to be here:
(defvar slime-protocol-version nil)
(setq slime-protocol-version
(eval-when-compile (slime-changelog-date)))
When new slime version gets installed before cl-swank, it stores the old
cl-swank version into slime-protocol-version. I don't know why
eval-when
Package: slime
Version: 1:20100605-1
Severity: minor
When both slime and cl-swank packages are installed with version
1:20100605-1, upon starting they claim there is the following version
mismatch:
Versions differ: 2010-06-04 (slime) vs. 2010-02-20 (swank).
-- System Information:
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