No more handles

I am running 64b Linux Open Client RHEL 6.2 and RTC 3.0:
Build id: RTC-I20110307-1844

Every so often, when I try to Save an update to a work item, I get an error popup saying:

Error logged from Process Client UI:
No more handles

I click OK to dismiss the popup. My work item is saved with no apparent side effects.

Sometimes, after clicking OK, I get another error popup saying that there is a serious SDK error and I should close the SDK or I will lose data. I click Cancel to dismiss the message and nothing bad happens.

How can I get rid of these annoying popup messages?

I have tried increasing the session ulimit for RTC, but it makes no difference.

# Set higher ulimits than default

# max locked memory

ulimit -l 128

# max open files

ulimit -n 16384

# stack size

ulimit -s 20480

# max user processes

ulimit -u 1638

Anthony,
I have a script which I run to launch eclipse/RTC. In the script, I set the following:

# Set higher ulimits than default

# max locked memory

ulimit -l 128

# max open files

ulimit -n 16384

# stack size

ulimit -s 20480

# max user processes

ulimit -u 1638