R run time question

All,

We are doing ANOVAs that take a long time (> 3 hrs) to run in 64-bit
mode on an Intel MacPro with 8 gbytes and 2.66 GHZ Intel Core i7
machine.

We have just tried running these on our server where we don't care as
much how long it takes. The server is a Mac "2 x 3 GHz Dual-Core
Intel Xeon" with 13 GB 667 MHz DDR2 FB-DIMM.

We have installed R "R 2.10.1 GUI 1.31-np Tiger build 32-bit (5538)"
on the server.

The data.frame is composed of the following observations, factors,
and numerals:

str(e1jit41blkAll)

'data.frame':	21648 obs. of  6 variables: $ subjectid: Factor w/ 22
levels "1379","1744",..: 1 1 1 1 1 1 1 1 1 1 ... $ cond     : Factor
w/ 2 levels "Visual","Auditory": 1 1 1 1 1 1 1 1 1 1 ... $ block    :
Factor w/ 8 levels "2","3","4","5",..: 1 1 1 1 1 1 1 1 1 1 ... $
cbtime   : Factor w/ 41 levels "1","2","3","4",..: 1 10 11 12 13 14
15 16 17 18 ... $ dirtime  : Ord.factor w/ 3 levels
"Early"<"Middle"<..: 1 1 1 1 1 1 1 1 1 1 ... $ jitter   : num  7.78
7.33 5.56 5 6.11 ...

When we run the following ANOVA on this dataframe:

anova.ALL.e1jit41.blkAll  <- with(e1jit41blkAll, aov(jitter ~
cond*block*dirtime*cbtime +
error(subjectid/(block*dirtime*cbtime)), data = e1jit41blkAll))

We get the following feedback:

Error: cannot allocate vector of size 3.5 Gb