[R] Unable to load package:lme4 [ Ubuntu 9.04 ]

[Girish A.R.]

Hi folks,

When I try to load package 'lme4' on my Linux box (64-bit Ubuntu
9.04), I get the following error:

-------------------------------------
> library(lme4)
Error in dyn.load(file, DLLpath = DLLpath, ...) :
  function 'cholmod_start' not provided by package 'Matrix'
Error: package/namespace load failed for 'lme4'
------------------------------------

I removed and re-installed both 'Matrix' and 'lme4', but that doesn't
seem to solve the problem. If this is something for the [R-sig-ME]
mailing list, please let me know.

Thanks,

-Girish

------------------------------------
> sessionInfo()
R version 2.8.1 (2008-12-22)
x86_64-pc-linux-gnu

locale:
LC_CTYPE=en_IN;LC_NUMERIC=C;LC_TIME=en_IN;LC_COLLATE=en_IN;LC_MONETARY=C;LC_MESSAGES=en_IN;LC_PAPER=en_IN;LC_NAME=C;LC_ADDRESS=C;LC_TELEPHONE=C;LC_MEASUREMENT=en_IN;LC_IDENTIFICATION=C

attached base packages:
[1] splines   stats     graphics  grDevices utils     datasets
methods
[8] base

other attached packages:
[1] Matrix_0.999375-17 lattice_0.17-25    Design_2.2-0
survival_2.35-4
[5] Hmisc_3.6-0        nlme_3.1-92        car_1.2-14
MASS_7.2-47

loaded via a namespace (and not attached):
[1] cluster_1.12.0 grid_2.8.1     tools_2.8.1