[R] update.packages()

[F.Tusell]

I have recently upgraded to R-1.2 and update.packages() gives the 
following error on my system. Am I doing something wrong?

ft.

--
Fernando TUSELL                                 e-mail:
Departamento de Econometría y Estadística           etptupaf at bs.ehu.es 
Facultad de CC.EE. y Empresariales              Tel:  (+34)94.601.3733
Avenida Lendakari Aguirre, 83                   Fax:  (+34)94.601.3754
E-48015 BILBAO  (Spain)                         Secr: (+34)94.601.3740
PGP: finger etptupaf at bsdx01.bs.ehu.es           http://agesi.bs.ehu.es
----------------------------------------------------------------------


> update.packages()

--08:49:37--  http://cran.r-project.org:80/src/contrib/PACKAGES
           => `/tmp/fileR399S327b23c6'
Connecting to proxy.lg.ehu.es:3128... connected!
Proxy request sent, awaiting response... 200 OK
Length: 29,955 [text/plain]

    0K -> .......... .......... .........                        [100%]

08:49:38 (254.37 KB/s) - `/tmp/fileR399S327b23c6' saved [29955/29955]

Error in if (a[k] > b[k]) return(TRUE) else if (a[k] < b[k]) return(FALSE) : 
        missing value where logical needed
In addition: Warning message: 
NAs introduced by coercion 

> traceback()

5: FUN(X[[1]], ...)
4: lapply(as.list(X), FUN, ...)
3: sapply(available[ok, "Version"], newerVersion, instp[k, "Version"])
2: old.packages(lib.loc = lib.loc, contriburl = contriburl, method = method, 
       available = available)
1: update.packages()

> version()
                      
platform i586-pc-linux-gnu
arch     i586             
os       linux-gnu        
system   i586, linux-gnu  
status                    
major    1                
minor    2.0              
year     2000             
month    12               
day      15               
language R           
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "info", "help", or "[un]subscribe"
(in the "body", not the subject !)  To: r-help-request at stat.math.ethz.ch
_._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._