Domino uses all the RAM

Dear Friends,

I have Domino 6.0.2 on Suse9Pro. 
If I run the TOP command I see that almost all my memory is used up as 
shown below. I used the KDE Sys Guard to determine whats eating up the 
memory and saw that there were LOTS of Java processes running under the 
Notes user profile, each using up a fair chunk of ram. Is this normal? 
Doesn't sound right.

top - 16:57:40 up 8 min,  2 users,  load average: 0.16, 0.68, 0.49
Tasks: 306 total,   1 running, 305 sleeping,   0 stopped,   0 zombie
Cpu(s):   2.8% user,   5.1% system,   0.0% nice,  92.1% idle
Mem:   1550348k total,  1507240k used,    43108k free,    47188k buffers
Swap:  3152352k total,        0k used,  3152352k free,  1149632k cached 

Thanks for your hep, Markus Bergh.
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