Since Tuesday, I've had a couple of machines where the above applications fail to start. The Mozilla apps pop up an error reporting box. Chromium just fails to start.

Code:
produban@IKUSWDISBN0001P:~> chromium[5122:5250:1006/123010.633642:ERROR:nss_util.cc(651)] Error initializing NSS with a persistent database (sql:/home/produban/.pki/nssdb): NSS error code: -8023
[5122:5250:1006/123010.633784:ERROR:nss_util.cc(158)] Error initializing NSS without a persistent database: NSS error code: -8023
[5122:5250:1006/123010.633795:FATAL:nss_util.cc(160)] nss_error=-8023, os_error=0
#0 0x558103735766 <unknown>
#1 0x55810374db5a <unknown>
#2 0x558104057ee0 <unknown>
#3 0x5581040583d8 <unknown>
#4 0x558104058437 <unknown>
#5 0x558103f7a0a5 <unknown>
#6 0x558103f1da85 <unknown>
#7 0x558103e5bbe7 <unknown>
#8 0x55810353b2c4 <unknown>
#9 0x55810353b528 <unknown>
#10 0x55810352c922 <unknown>
#11 0x558102371117 <unknown>
#12 0x55810237048f <unknown>
#13 0x55810379aa5d <unknown>
#14 0x558103795f72 <unknown>
#15 0x7ff96f6fc744 start_thread
#16 0x7ff966346aad __clone


Received signal 6
#0 0x558103735766 <unknown>
#1 0x558101d41d0f <unknown>
#2 0x558103735b0d <unknown>
#3 0x7ff96f704b10 <unknown>
#4 0x7ff9662918d7 __GI_raise
#5 0x7ff966292caa __GI_abort
#6 0x5581037353d5 <unknown>
#7 0x55810374de65 <unknown>
#8 0x558104057ee0 <unknown>
#9 0x5581040583d8 <unknown>
#10 0x558104058437 <unknown>
#11 0x558103f7a0a5 <unknown>
#12 0x558103f1da85 <unknown>
#13 0x558103e5bbe7 <unknown>
#14 0x55810353b2c4 <unknown>                                                                                                                                                                    
#15 0x55810353b528 <unknown>                                                                                                                                                                    
#16 0x55810352c922 <unknown>                                                                                                                                                                    
#17 0x558102371117 <unknown>                                                                                                                                                                    
#18 0x55810237048f <unknown>                                                                                                                                                                    
#19 0x55810379aa5d <unknown>                                                                                                                                                                    
#20 0x558103795f72 <unknown>                                                                                                                                                                    
#21 0x7ff96f6fc744 start_thread                                                                                                                                                                 
#22 0x7ff966346aad __clone
  r8: ffffb32c00527fc8  r9: ffffb32c00527fb8 r10: 0000000000000008 r11: 0000000000000202
 r12: 00007ff94c528e40 r13: 0000000000000051 r14: 00007ff94c529070 r15: 00007ff94c5294e0
  di: 0000000000001402  si: 0000000000001482  bp: 00007ff966e9cd40  bx: 00007ff94c529500
  dx: 0000000000000006  ax: 0000000000000000  cx: 00007ff9662918d7  sp: 00007ff94c528cd8
  ip: 00007ff9662918d7 efl: 0000000000000202 cgf: 0000000000000033 erf: 0000000000000000
 trp: 0000000000000000 msk: 0000000000000000 cr2: 0000000000000000
[end of stack trace]
Calling _exit(1). Core file will not be generated.
Anyone else seen this? Any ideas? The 1st machine it happened to I just rebuilt. TIA!